DP Biology Questionbank
Topic 2: Molecular biology
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Description
Overview of the essential ideas for this topic.
2.1: Living organisms control their composition by a complex web of chemical reactions.
2.2: Water is the medium of life.
2.3: Compounds of carbon, hydrogen and oxygen are used to supply and store energy.
2.4: Proteins have a very wide range of functions in living organisms.
2.5: Enzymes control the metabolism of the cell.
2.6: The structure of DNA allows efficient storage of genetic information.
2.7: Genetic information in DNA can be accurately copied and can be translated to make the proteins needed by the cell.
2.8: Cell respiration supplies energy for the functions of life.
2.9: Photosynthesis uses the energy in sunlight to produce the chemical energy needed for life.
Directly related questions
- 15M.1.SL.TZ2.2: The image shows a DNA nucleotide. Which correctly identifies the parts labelled I and II?
- 15M.2.SL.TZ2.5c: Many cell functions, like synthesis of macromolecules and transport, require energy in the form...
- 15M.2.SL.TZ1.2c: Milk contains lactose which some people can digest but some cannot. Explain the production of...
- 13M.1.HL.TZ1.8: Which graph shows the effect of increasing substrate concentration on enzyme activity?
- 13M.1.HL.TZ1.7: The base sequence of a fragment of DNA is:ACC GTG CAG GAT What is the base sequence on the...
- 13M.1.HL.TZ2.8: Which carbohydrates are used to provide energy storage in plants and animals?
- 13M.1.HL.TZ2.7: What is formed from glucose during anaerobic cell respiration? A. Lactate and ATP in cytoplasmB....
- 13M.1.SL.TZ1.12: What substance is produced from glucose during anaerobic respiration in all organisms? A. Carbon...
- 13M.1.SL.TZ2.8: What property makes water an important coolant in the natural world? A. It is cohesive.B. It...
- 11M.1.HL.TZ1.6: Which statement about water is correct? A. The atoms within a molecule of water are held...
- 11M.2.HL.TZ2.5a: Outline the effect of temperature and substrate concentration on the activity of enzymes.
- 12M.2.HL.TZ1.1f: Suggest one reason for the high LCTw measured for the female dolphin.
- 12M.1.HL.TZ1.6: Which statements correctly explain properties of water? I. Water is a useful medium for...
- 12M.1.HL.TZ1.8: What occurs during DNA replication? A. DNA polymerase separates the two DNA strands. B. DNA...
- 12M.1.HL.TZ1.7: Which sugars are both disaccharides? A. maltose and lactose B. lactose and fructose C. fructose...
- 12M.1.HL.TZ2.8: What type of bond is labelled X? A. Ionic B. Peptide C. Covalent D. Hydrogen
- 12M.1.SL.TZ2.9: What is formed during transcription? A. RNA strand complementary to DNA strand, formed by RNA...
- 12M.1.SL.TZ1.7: Between which atoms do hydrogen bonds form in water? A. Oxygen and hydrogen atoms in the same...
- 09M.2.HL.TZ1.6c: Outline how enzymes catalyse reactions.
- 09M.2.HL.TZ2.4c: Explain the effect of light intensity and temperature on the rate of photosynthesis.
- 09M.1.HL.TZ1.10: What is light energy used for during photosynthesis? A. To produce carbon dioxide B. To produce...
- 09M.1.HL.TZ2.11: On which molecule is a codon found? A. DNAB. mRNAC. tRNAD. rRNA
- 09M.1.SL.TZ2.28: Which of the following colours of light is absorbed the most by chlorophyll? A. BlueB. GreenC....
- 09M.1.HL.TZ2.34: Which of the following statements is true about enzymes? A. They are used up in the reactions...
- 10M.2.HL.TZ1.2d: Simple laboratory experiments show that when the enzyme lactase is mixed with lactose, the...
- 10M.2.HL.TZ2.1h: Suggest one advantage and one disadvantage for blood sampling rather than weighing birds to...
- 10M.2.HL.TZ2.5b: Distinguish between fibrous and globular proteins with reference to one example of each protein...
- 10M.1.SL.TZ2.7: What is a role of sulfur in living organisms? A. Formation of proteins B. Formation of...
- 10M.2.SL.TZ2.5a: Outline the role of hydrolysis in the relationships between monosaccharides, disaccharides and...
- 10M.1.HL.TZ2.10: Why is light important in photosynthesis? A. To produce ATP and split water molecules B. To...
- 11N.2.HL.TZ0.5 b: Many people cannot digest lactose and benefit from a diet containing no lactose. Outline the...
- 11N.2.SL.TZ0.7a: Distinguish between ventilation, gas exchange and cell respiration.
- 11N.3.SL.TZ0.1b: State the range of the body mass index (BMI) that corresponds to overweight status.
- 11N.3.SL.TZ0.1c: Compare the percentage of men and women who exercised daily.
- 12N.2.HL.TZ0.1c: Phospholipids found in the surfactants form a surface film on the moist lining of the alveoli....
- 12N.2.HL.TZ0.1f: Using all the data provided, evaluate the hypothesis that the presence of proteins in surfactants...
- 10N.2.SL.TZ0.1e(ii): Outline the difference in mRNA production for the three genes during the submergence period for...
- 10N.2.SL.TZ0.3d: Outline the use of polymerase chain reaction (PCR) to copy and amplify minute quantities of DNA.
- 09N.2.SL.TZ0.6b: Outline anaerobic cell respiration in plant cells.
- 09N.2.SL.TZ0.2b: Distinguish between DNA and RNA nucleotides by giving two differences in the chemical structure...
- 09N.2.SL.TZ0.2c: Explain the role of transfer RNA (tRNA) in the process of translation.
- 15N.1.SL.TZ0.6: Which always contains carbon, hydrogen and oxygen? I. Carbohydrate II. Protein III. Fat A. I...
- 15N.1.SL.TZ0.9: What is required to replicate DNA? A. Temperature of 37 °C B. Free nucleotides carrying A, C, G...
- 15N.2.SL.TZ0.1c: Suggest a reason for the variation in fork length of ocean age one O. nerka.
- 15N.2.SL.TZ0.1f(i): Compare the results shown in the table for monkfish and shark.
- 09N.1.SL.TZ0.7: Which of the following chemical elements are part of biochemical molecules in living organisms?A....
- 16M.1.SL.TZ0.5: Research has shown that the genetic code is not entirely universal. Which research finding has...
- 16M.1.SL.TZ0.6: This is a sequence of nucleotides from a section of mRNA. AUGAAACGCACGCAG From which DNA...
- 16M.3.SL.TZ0.2c: Explain the pattern shown in generation 3.0.
- 16N.3.SL.TZ0.2a: Suggest one reason for differences between the cereal grains, in the percentage of starch...
- 17M.1.SL.TZ1.15: How does the proteome of a species contain a larger number of proteins than genes that code for...
- 17M.1.SL.TZ2.11: What is the relative wavelength in the visible spectrum of red light and blue light and are these...
- 17M.1.SL.TZ2.12: The fungus Rhytisma grows on the leaves of certain trees, causing a yellow leaf area in which...
- 17M.1.HL.TZ1.21: Glucose is absorbed through protein channels in the plasma membrane of epithelium cells in the...
- 17M.2.SL.TZ1.6b: Distinguish between the structures of the different types of fatty acids in food.
- 17M.2.SL.TZ1.5a: Outline how translation depends on complementary base pairing.
- 17M.2.SL.TZ2.6a: Describe the structure and function of starch in plants.
- 17M.2.HL.TZ2.3a: Outline the properties of water molecules that permit them to move upwards in plants.
- 17N.1.SL.TZ0.06: Which molecule could be hydrolysed into amino acids?
- 17N.1.SL.TZ0.10: For which discovery about DNA do Watson and Crick receive credit? A. DNA is the molecule that...
- 17N.2.SL.TZ0.03a: The figure represents a water molecule. Draw a second water molecule to show how bonds can...
- 17N.1.SL.TZ0.08: The Framingham heart study was an observational study that went on for 20 years. The following...
- 17N.3.SL.TZ0.02b: State a suitable solvent for extracting photosynthetic pigments from plant tissue.
- 17N.3.SL.TZ0.01d: Explain, with reference to the thermal properties of water, how this experiment helps demonstrate...
- 17N.3.HL.TZ0.01a: Outline what happens when spinach extract is spotted on a TLC plate and placed into a container...
- 17N.3.HL.TZ0.01b: Explain what the Rf values represent in chromatography.
- 15M.1.SL.TZ2.8: What are the most frequently occurring elements in living organisms?A. calcium, phosphorus, iron...
- 15M.1.SL.TZ2.9: The image shows the structural formula of a molecule. What is this molecule?A. Amino acidB....
- 15M.2.SL.TZ1.2a: Milk contains lactose which some people can digest but some cannot. State what type of sugar...
- 15M.1.HL.TZ2.10: Which sequence represents the order of events in protein synthesis?
- 15M.3.SL.TZ1.7a: Describe the pattern of CO2 uptake in the control plants.
- 15M.3.SL.TZ1.7c: Discuss how CO2 uptake in this investigation may be affected by other limiting factors.
- 13M.2.HL.TZ2.4b: Explain how the active site promotes enzyme–substrate specificity.
- 13M.2.HL.TZ2.5b: Outline transcription in prokaryotes.
- 13M.1.HL.TZ1.6: Which molecules are monosaccharides? A. starch, glycogen, celluloseB. sucrose, maltose,...
- 13M.1.HL.TZ1.10: In cell respiration, what is the name of the process where glucose is broken down into...
- 13M.1.HL.TZ2.10: For what purpose is the enzyme lactase useful? A. Production of lactose-free milk so that more...
- 13M.1.SL.TZ1.5: Water shows strong cohesive properties. Which of the following can occur because of the cohesive...
- 11M.1.HL.TZ1.7: Which type of molecule is shown in the diagram below? A. PeptideB. CarbohydrateC. LipidD....
- 11M.1.SL.TZ1.11: What is denaturation? A. A structural change of a protein that results in the loss of its...
- 11M.3.SL.TZ2.7c: Deduce what happens to the rate of respiration as the temperature increases between 40°C and 50°C.
- 12M.2.HL.TZ1.7c: Explain the role of limiting factors in photosynthesis.
- 12M.1.HL.TZ1.9: Which graph shows the effect of increasing the substrate concentration on enzyme activity?
- 12M.1.HL.TZ2.9: The diagram shows the translation of a mRNA molecule. A tRNA molecule with anticodon CAG...
- 09M.2.HL.TZ2.2a: Draw a labelled diagram showing two different complementary pairs of nucleotides in a molecule of...
- 09M.1.HL.TZ2.6: Which of the following is true about a polar amino acid and cellulose? A. Both are...
- 09M.1.HL.TZ2.9: Blood is a water-based transport medium. Which property of water makes it a good transport...
- 10M.2.HL.TZ1.2b (i): There are several different types of carbohydrate. State which type of carbohydrate lactose is.
- 10M.2.SL.TZ1.5b: Explain how the base sequence of DNA is conserved during replication.
- 10M.3.SL.TZ1.10a: State two functions of proteins, giving a named example of each.
- 11N.1.HL.TZ0.12: What is involved during oxidation? A. The loss of electrons B. The gain of electrons C. The gain...
- 11N.2.SL.TZ0.6b: Outline the role of condensation and hydrolysis in the relationship between fatty acids, glycerol...
- 11N.2.SL.TZ0.6a: State one role in living organisms for each of the following: sulfur, calcium, phosphorus and iron.
- 12N.2.HL.TZ0.1a: State the surfactant that contains the least amount of phospholipids.
- 12N.1.HL.TZ0.6: Which points to the 3′ end of a strand of DNA? A. IB. IIC. IIID. IV
- 12N.1.SL.TZ0.11: The diagram shows anaerobic respiration in yeast cells. What would be produced at X? A. ATP...
- 15N.1.SL.TZ0.8: Which type of bond is identified by the arrow? A. Phosphate B. Hydrogen C. Covalent D. Peptide
- 15N.1.HL.TZ0.8: What is decreased when lactase is added to milk? A. Sweetness B. Disaccharides C. Calcium D....
- 13N.1.HL.TZ0.8: What is correct for the DNA double helix?
- 13N.2.SL.TZ0.3a: Draw a labelled diagram of the structure of DNA, showing the arrangement of subunits.
- 13N.2.HL.TZ0.8a: Outline the role of condensation and hydrolysis in the relationship between amino acids and...
- 13N.3.SL.TZ0.8a.i: Other than acting as catalysts state three functions of proteins, giving an example of each.
- 16N.1.SL.TZ0.9: A fever in a normally healthy adult during an illness is not usually a problem and can be...
- 16N.3.SL.TZ0.1b: Describe how the apparatus measures the oxygen consumption of the mouse
- 16N.2.SL.TZ0.3c: Describe cell respiration in terms of metabolism.
- 16N.3.HL.TZ0.1a: State the effect of enzyme concentration on the hydrolysis of proteins.
- 17M.1.HL.TZ2.7: Which can be explained by the solvent properties of water? A. Sodium chloride is transported as...
- 17M.2.SL.TZ2.5b: Outline the role of ribosomes in translation.
- 17M.2.SL.TZ2.5a: Draw a molecular diagram of an amino acid to show its general structure.
- 17M.2.SL.TZ2.1f: Mitochondria are essential for aerobic respiration. Suggest one possible role of the proteins...
- 17M.3.SL.TZ1.1a: Outline what the standard deviations reveal about the data from this experiment.
- 17M.3.SL.TZ1.1b: One result in this experiment can be classified as an outlier as its value is very distant from...
- 17N.2.SL.TZ0.05c: Compare and contrast cis-fatty acids and trans-fatty acids.
- 17N.2.SL.TZ0.05a: State one disaccharide and the two monomers from which it can be...
- 15M.1.HL.TZ1.6: What property of water makes it suitable as a coolant?A. It takes a lot of energy to increase the...
- 15M.1.HL.TZ1.8: Which sugars are examples of a monosaccharide and disaccharide?
- 15M.1.SL.TZ2.11: How can the rate of photosynthesis be measured? I. By the amount of oxygen producedII. By the...
- 15M.2.HL.TZ2.3c (i): Explain the role of the following enzymes in DNA replication.Helicase
- 15M.2.SL.TZ1.2b: Milk contains lactose which some people can digest but some cannot. State a function of lactose.
- 15M.1.HL.TZ2.11: Which is the activation energy of a reaction when it is catalysed by an enzyme?
- 15M.1.HL.TZ2.14: What happens in both respiration and photosynthesis? A. Triose phosphates are decarboxylated.B....
- 15M.2.HL.TZ1.7c: Outline two factors that affect the rate of photosynthesis.
- 15M.3.SL.TZ1.7b: Outline the effect of increased carbon dioxide concentration on CO2 uptake.
- 15M.1.SL.TZ1.8: What are these molecules?
- 13M.1.HL.TZ1.14: Organisms can be genetically modified to produce the human blood clotting factor IX. What...
- 13M.1.SL.TZ1.10: What links the pairs of complementary bases in a DNA double helix? A. Covalent bondsB. Hydrogen...
- 13M.1.SL.TZ2.12: How does chlorophyll respond to the red, green and blue wavelengths in white light?
- 11M.1.SL.TZ1.8: The graph below shows the effect of substrate concentration on enzyme activity. What conclusion...
- 11M.1.SL.TZ1.13: What is the source of the oxygen released into the air as a product of photosynthesis? A....
- 11M.1.SL.TZ2.11: Which process produces the most ATP per molecule of glucose? A. Anaerobic respiration in a yeast...
- 11M.3.SL.TZ1.13d: Suggest two reasons, other than breeding, why birds spend more time at the colony than any other...
- 11M.3.SL.TZ2.7a: Identify the optimum temperature for photosynthesis in this plant.
- 12M.1.HL.TZ2.7: The diagrams show three representations of the structure of the same chemical substance. What...
- 12M.2.SL.TZ1.3c: State two differences between RNA and DNA nucleotides.
- 09M.1.HL.TZ1.9: What happens during the pathway of glycolysis? A. Glucose is broken down into pyruvate. B....
- 09M.1.HL.TZ2.7: What conclusion can be drawn from examining the action spectrum for a green plant shown...
- 09M.1.SL.TZ1.9: Which of these molecules is a disaccharide? A. Galactose B. Sucrose C. Cellulose D. Ribose
- 09M.1.SL.TZ1.10: What is a codon? A. A sequence of nucleotides on rRNA that corresponds to an amino acid B. A...
- 10M.2.HL.TZ1.2b (ii): State the type of chemical reaction that occurs when lactose is digested into glucose and galactose.
- 10M.2.HL.TZ2.1f: Explain the differences in the triglyceride level and butyrate level for the hermit thrush at...
- 10M.1.SL.TZ2.8: Which molecules form the nucleotide marked in the diagram? A. phosphate, deoxyribose and...
- 10M.1.SL.TZ2.12: The graph below shows the effect of temperature on the separation of the strands in DNA to form...
- 10M.2.SL.TZ1.2b (i): There are several different types of carbohydrate. State which type of carbohydrate lactose is.
- 10M.2.SL.TZ1.2a: Glucose and galactose are examples of monosaccharides. State one other example of a monosaccharide.
- 10M.3.SL.TZ2.9a: List three functions of proteins, giving a named example of each.
- 11N.1.HL.TZ0.8: Which of the following statements is/are correct for DNA replication? I. It occurs during...
- 11N.1.HL.TZ0.9: Which of the following processes uses DNA ligase? A. Unwinding DNA B. Gene transfer using...
- 11N.3.SL.TZ0.4b: State the percentage contribution of the different sources of energy at 36% VO2 max in...
- 12N.1.SL.TZ0.10: What will be the sequence on the mRNA molecule that is produced when the DNA base sequence...
- 10N.2.SL.TZ0.1g: Evaluate, using all the data, how modified varieties of rice could be used to overcome food...
- 10N.2.HL.TZ0.1c(i): Determine which gene produced the most mRNA on the first day of the submergence period for...
- 10N.2.HL.TZ0.1c(ii): Outline the difference in mRNA production for the three genes during the submergence period for...
- 15N.2.SL.TZ0.1e: Using the data, suggest one reason for the relationship between protein content and fork length.
- 13N.2.SL.TZ0.3b: Explain DNA replication.
- 16M.1.SL.TZ0.3: Which is an effect of protein denaturation? A. The order of amino acids is changed when the...
- 16M.1.HL.TZ0.2: Why is sweat a good coolant for the body? A. The arterioles that transfer water to sweat move...
- 16M.1.HL.TZ0.1: Which molecule is a sugar?
- 16N.1.SL.TZ0.6: Which type of reaction is the breakdown of starch into sugars? A. DenaturationB. ReductionC....
- 16N.1.SL.TZ0.7: The diagram shows a molecular structure. Which type of molecule is shown? A. Amino acidB....
- 16M.2.SL.TZ0.3a: (i) Distinguish between the thermal properties of water and methane. (ii) Explain the reasons...
- 16M.2.HL.TZ0.2b: Draw the structure of a saturated fatty acid.
- 16M.2.SL.TZ0.6b: Outline the process of gas exchange necessary for aerobic respiration in a unicellular eukaryotic...
- 16N.2.SL.TZ0.3a: Define metabolism.
- 16N.3.SL.TZ0.2b: Suggest one method that could have been used to keep the tubes at a constant temperature.
- 17M.1.SL.TZ1.6: A polymer of alpha-D-glucose found in plants has mostly 1,4 linkages and some 1,6 linkages. Which...
- 17M.1.SL.TZ1.9: The most abundant structural protein in the human body is found in ligaments and skin. What is...
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 17M.1.SL.TZ1.12: The table shows the genetic code. Which mRNA could code for the sequence...
- 17M.1.SL.TZ2.9: Which are necessary to make DNA replication semi-conservative? I. Separation of the strands by...
- 17M.2.SL.TZ1.5b: Describe the polymerase chain reaction (PCR), including the role of Taq DNA polymerase.
- 17M.2.SL.TZ2.1b: Describe how increased capillary density could affect the aerobic capacity of muscle.
- 17M.2.SL.TZ2.1d: Discuss the effect of exercise on the results of the experiment.
- 17M.3.SL.TZ1.1d: State one factor that would need to be controlled in this experiment.
- 17M.3.SL.TZ2.2a: Determine the optimum pH and temperature of keratinase.
- 17M.3.SL.TZ1.2b: C. caroliniana can grow well in water at 27°C. This experiment was carried out at...
- 17N.2.HL.TZ0.07b: Nitrogen is part of many important substances in living organisms. Distinguish between...
- 17N.3.SL.TZ0.01b: State two conditions that must be the same for each cup at the start of the experiment.
- 17N.3.SL.TZ0.01a: Calculate the change in temperature in each cup after 20 minutes. Uncovered: Covered with wet...
- 15M.2.SL.TZ1.4b (ii): Explain one way of directly measuring the rate of photosynthesis.
- 15M.1.HL.TZ2.5: What are the most frequently occurring elements in living organisms? A. calcium, phosphorus,...
- 15M.3.SL.TZ1.6c: Explain the role of ATP in muscle contraction.
- 13M.2.HL.TZ2.4c: Outline possible effects of acids on enzyme activity.
- 13M.2.SL.TZ1.6a: Outline the difference in absorption of red, blue and green light by chlorophyll.
- 11M.1.HL.TZ1.9: Which of the following are involved in both replication and transcription? A. DNA only B. DNA...
- 11M.1.SL.TZ2.14: How many molecules of water are required to completely hydrolyse a polypeptide made up of 23...
- 11M.3.SL.TZ1.13a: State which activity takes up least of the overall time budget of the guillemots.
- 12M.2.SL.TZ1.5a: Outline, with examples, the types of carbohydrate found in living organisms.
- 09M.2.SL.TZ1.7c: Explain the process of translation.
- 09M.1.HL.TZ1.7: Which diagram represents the polarity of a water molecule?
- 09M.2.SL.TZ2.3b: Explain the effects of pH on enzyme catalysed reactions.
- 10M.1.SL.TZ2.9: Which enzyme catalyzes the elongation of the leading strand? A. RNA polymerase B. Helicase C....
- 10M.2.SL.TZ2.5b: Describe the use of biotechnology in the production of lactose-free milk.
- 11N.2.SL.TZ0.7c: Respiration and other processes in cells involve enzymes. Explain the factors that can affect...
- 12N.2.HL.TZ0.1b: Compare the composition of natural human surfactant with synthetic surfactants.
- 11N.1.SL.TZ0.8: What is a function of cellulose in plants? A. To form a mesh of fibres in the cell wall B. To...
- 12N.2.SL.TZ0.5a: Outline the role of condensation and hydrolysis in metabolic reactions involving...
- 10N.2.SL.TZ0.4b: Outline how light energy is used and how organic molecules are made in photosynthesis.
- 09N.3.SL.TZ0.1e: State the body mass index (BMI) below which a person is considered to be underweight.
- 15N.1.SL.TZ0.11: What describes anaerobic cell respiration? A. Glucose break down to pyruvate B. Carbon dioxide...
- 15N.1.HL.TZ0.9: What is required to replicate DNA? A. Temperature of 37 °C B. Free nucleotides carrying A, C, G...
- 15N.2.SL.TZ0.3c(iii): Deduce the percentage of adenine in Oryza sativa if the proportion of guanine in that organism is...
- 13N.1.SL.TZ0.10: What is light energy used for in photolysis?A. Formation of hydrogen and oxygenB. Formation of...
- 13N.2.HL.TZ0.5a: Water is essential to life on Earth. Outline two properties of water that are important for...
- 09N.1.HL.TZ0.8: What happens during translation?A. Copying of DNA to produce DNAB. Copying of DNA to produce...
- 16M.3.SL.TZ0.2a: The density of the DNA band at generation 0 is 1.724 and the density of the dark band of DNA at...
- 16N.3.SL.TZ0.2c: Explain the importance of having equal quantities of the enzyme at the start of the experiment.
- 17M.1.SL.TZ1.10: The graph shows the effect of increasing the substrate concentration on the rate of an...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive system....
- 17M.2.SL.TZ2.1c.ii: Compare and contrast the results for the water–no exercise group and the Epi–no exercise group.
- 17M.2.HL.TZ1.5c: Distinguish between anabolism, catabolism and metabolism.
- 17M.2.HL.TZ2.1f.i: State the name of the molecule which is produced by transcription.
- 17M.3.SL.TZ2.2b: Suggest two changes occurring in the reaction vessel that could be used to indicate keratinase...
- 17N.1.SL.TZ0.19: An experiment was set up so that each test tube contained water at a pH of 6.3 and a pH...
- 17N.3.SL.TZ0.02c: Explain how the pigments in the chromatogram of spinach are identified.
- 17N.1.HL.TZ0.09: A cricket was placed in a respirometer at constant temperature for ten minutes. The soap bubble...
- 15M.1.HL.TZ1.9: Why does exposure to high temperatures cause an enzyme to lose its biological properties?A. The...
- 15M.2.SL.TZ2.5a: Describe the genetic code and its relationship to polypeptides and proteins.
- 15M.3.SL.TZ2.8b: List three limiting factors of photosynthesis.
- 13M.1.HL.TZ1.9: What is produced when the enzyme lactase is added to milk? A. Glucose and galactoseB. LactoseC....
- 13M.2.SL.TZ2.5c: Explain the effect of changes of pH, substrate concentration and temperature on enzyme activity.
- 11M.1.HL.TZ1.10: What is the source of the oxygen released into the air as a product of photosynthesis? A....
- 11M.2.HL.TZ2.2a (ii): State the type of bond labelled II.
- 11M.1.SL.TZ1.10: The percentage of thymine in the DNA of an organism is approximately 30 %. What is the percentage...
- 11M.1.SL.TZ2.12: Which type of light is least useful for photosynthesis in terrestrial plants? A. Blue B. Green...
- 12M.1.SL.TZ2.6: The diagrams show three representations of the structure of the same chemical substance. What...
- 12M.1.SL.TZ1.12: How is oxygen produced during photosynthesis? A. Water molecules are split with energy from ATP....
- 12M.1.SL.TZ2.11: What are the effects of changing carbon dioxide concentration on the rate of photosynthesis? I....
- 12M.1.SL.TZ1.8: Which carbon compound produced by living organisms is inorganic? A. DNA B. Cellulose C. Glucose...
- 09M.2.HL.TZ2.6c: Explain prokaryotic DNA replication.
- 09M.2.SL.TZ1.7a: Draw a labelled diagram to show how two nucleotides are joined together in a single strand of DNA.
- 09M.1.HL.TZ2.36: Which chemical is shown in the diagram below? A. MonosaccharideB. TriglycerideC. Fatty acidD....
- 09M.2.SL.TZ2.3c: Distinguish between the process of anaerobic respiration in yeast and humans.
- 09M.1.SL.TZ1.11: What happens as an enzyme becomes denatured? A. The enzyme works faster. B. The enzyme works...
- 09M.1.SL.TZ2.14: Which of the following processes produces CO2? I. Glycolysis II. Alcohol (ethanol)...
- 09M.2.SL.TZ2.7b: Outline how three different environmental conditions can affect the rate of photosynthesis in...
- 10M.2.HL.TZ2.1g: Scientists have hypothesized that the food quality is better at Site 1 than at Site 2. Evaluate...
- 10M.2.HL.TZ2.3c: State a word equation for anaerobic cell respiration in humans.
- 10M.1.SL.TZ1.9: What sequence of processes is carried out by the structure labelled X during translation? A....
- 10M.2.SL.TZ2.2a: Outline the bonding between DNA nucleotides.
- 11N.2.SL.TZ0.7b: Outline the process of aerobic respiration.
- 12N.1.SL.TZ0.9: The diagram shows part of a DNA molecule. What type of bond does X represent? A. Covalent...
- 10N.2.SL.TZ0.1f: Deduce, using all the data, which gene was used to modify GMFC.
- 10N.2.SL.TZ0.4c: Explain the significance of complementary base pairing for replication, transcription and...
- 10N.2.HL.TZ0.4a: State four functions of proteins, giving a named example of each.
- 09N.2.SL.TZ0.5c: Explain how the properties of water are significant to living organisms.
- 09N.2.HL.TZ0.7a: Outline the thermal, cohesive and solvent properties of water.
- 09N.3.SL.TZ0.4b: Evaluate the hypothesis that acidosis in muscles is due entirely to H+ production as a result of...
- 15M.1.SL.TZ2.3: Which sequence shows increasing relative size?
- 15N.1.SL.TZ0.10: How is the information in the genetic code used? A. To predict the genotype of gametes B. To...
- 15N.2.SL.TZ0.1g: State which type of fish shows the most variation.
- 13N.1.SL.TZ0.7: Which types of molecule are shown in the diagrams?
- 13N.1.HL.TZ0.11: A base substitution in a gene has changed a codon. Which of these consequences could result from...
- 16N.1.SL.TZ0.8: Which properties explain the ability of water to dissolve solutes? I. Polarity of water...
- 16N.1.SL.TZ0.12: Which pair of molecules are products of aerobic and anaerobic cell respiration in some organisms?
- 16N.1.HL.TZ0.9: It is possible to attach β-galactosidase to alginate beads for use in the production of...
- 17M.1.SL.TZ1.11: A short sequence of nucleotides reads GGACAGAGCGCAGACGA. In which type of molecule could this...
- 17M.1.SL.TZ2.10: The graph shows the changes in lactate and pyruvate measured in an athlete’s blood during and...
- 17M.1.SL.TZ2.7: The diagram shows a cycle of reactions that occurs in human liver cells. Which term describes...
- 17M.1.HL.TZ1.8: What type of molecule is shown in this diagram? A. Trans saturated fatty acid B. Cis...
- 17M.1.HL.TZ1.9: A strand of mRNA consists of the following nucleotides: AUUCUGGCUA Which of the following...
- 17M.2.SL.TZ2.1e: Analyse the effect of exercise on the presence of the mitochondrial proteins in the leg muscle.
- 17M.3.SL.TZ2.2c: State two conditions that should be kept constant in both experiments.
- 17N.1.SL.TZ0.11: Which sequence of bases and amino acids could be produced by transcription and translationof the...
- 17N.3.SL.TZ0.02a: Identify pigment labelled P.
- 17N.2.HL.TZ0.07a: Nitrogen is part of many important substances in living organisms. Draw labelled diagrams to...
- 15M.1.SL.TZ2.1: Which molecule is a polysaccharide?A. CelluloseB. FructoseC. MaltoseD. Sucrose
- 15M.1.HL.TZ2.6: Where are proteins synthesized by free ribosomes used? A. Outside the cell after secretionB....
- 13M.1.HL.TZ1.26: A channel protein is used to transport ions across a membrane. What would you expect to find...
- 13M.1.HL.TZ2.6: Which molecules show a monosaccharide and a fatty acid?
- 13M.3.SL.TZ2.8b: Explain the role of enzymes in metabolic pathways.
- 11M.1.SL.TZ2.8: What is the difference between galactose and lactose? A. Lactose is a disaccharide and galactose...
- 12M.2.HL.TZ1.1e: Outline the relationship between body mass and LCTw for male dolphins.
- 12M.2.HL.TZ1.5b: Describe the importance of hydrolysis in digestion.
- 12M.1.SL.TZ1.4: Where in the cell do condensation reactions involving amino acids occur? A. Nucleus B. Golgi...
- 12M.2.SL.TZ1.3a: The diagram below represents a DNA nucleotide. Identify the phosphate group and...
- 12M.2.SL.TZ1.5b: Describe the importance of hydrolysis in digestion.
- 09M.2.SL.TZ1.3a: Define active site.
- 09M.1.SL.TZ2.8: Which molecule is shown below? A. GlucoseB. GalactoseC. RiboseD. Sucrose
- 09M.1.SL.TZ2.11: What is replicated by a semi-conservative process? A. Messenger RNA (mRNA) onlyB. Messenger RNA...
- 09M.1.HL.TZ2.10: If 15 % of a sample of DNA is thymine, what percentage of the DNA is guanine? A. 15 %B. 30 %C....
- 10M.2.HL.TZ1.2a: Glucose and galactose are examples of monosaccharides. State one other example of a monosaccharide.
- 10M.1.SL.TZ1.11: The following diagram shows a short stretch of DNA. What bases are indicated by labels Y and Z?
- 10M.2.HL.TZ2.3b: Explain how chemical bonding between water molecules makes water a valuable coolant in living...
- 10M.1.SL.TZ2.10: Which of the following is a function of cellulose in plants? A. Storage of fat B. Formation of...
- 10M.2.SL.TZ1.2b (ii): State the type of chemical reaction that occurs when lactose is digested into glucose and galactose.
- 10M.2.SL.TZ2.5c: Explain the importance of enzymes to human digestion.
- 11N.3.SL.TZ0.1a: Measure the difference between the percentage of overweight men and the percentage of overweight...
- 11N.3.SL.TZ0.4d: Fat can only be used in aerobic respiration. Suggest reasons for the change in the percentage...
- 11N.3.SL.TZ0.4c: Using the data in the graph, describe the relationship between the intensity of exercise and the...
- 11N.1.SL.TZ0.11: What does the structure labelled Y represent? A. Ribose B. Thymine C. Guanine D. Deoxyribose
- 12N.1.HL.TZ0.5: Which structure represents a fatty acid?
- 12N.1.HL.TZ0.8: What is the energy absorbed by chlorophyll used directly for in plants? I. To produce ATP II....
- 12N.2.SL.TZ0.5b: Metabolic reactions are catalysed by enzymes. Explain how enzymes catalyse reactions and how a...
- 10N.2.SL.TZ0.4a: State four elements that are needed by living organisms, other than carbon, hydrogen and oxygen,...
- 10N.2.HL.TZ0.1d: Using only this data, deduce which gene confers submersion resistance to rice plants.
- 09N.2.SL.TZ0.2a: State the type of bonds that (i) connect base pairs in a DNA molecule. (ii) link DNA...
- 09N.3.SL.TZ0.3: Outline the variation in the structure of fatty acids.
- 09N.3.SL.TZ0.9b: Outline the role of oxygen in cellular respiration.
- 15N.2.SL.TZ0.1b: Distinguish between the fork lengths of O. nerka in autumn 2008 and winter 2009.
- 15N.2.SL.TZ0.1d(ii): Outline the difficulty in predicting the age of O. nerka from fork length.
- 15N.2.SL.TZ0.1f(ii): Suggest additional information that would be helpful in evaluating these data.
- 15N.2.SL.TZ0.4c: List two examples of polysaccharides.
- 15N.2.SL.TZ0.5a: Draw a labelled diagram of a section of DNA showing four nucleotides.
- 15N.2.SL.TZ0.6b: Explain the process of translation in cells.
- 13N.2.SL.TZ0.5b: Describe how the rate of photosynthesis can be measured.
- 13N.3.SL.TZ0.3a: Outline the molecular structure of different types of fatty acids.
- 09N.1.SL.TZ0.8: Which of the following is an organic compound made by all plants?A. Carbon dioxideB. DNAC....
- 09N.1.HL.TZ0.9: Which equation shows a chemical reaction that occurs during anaerobic cell respiration?
- 16M.1.HL.TZ0.3: Which molecule is a polysaccharide? A. GlucagonB. GlucoseC. GlycerolD. Glycogen
- 16M.1.HL.TZ0.11: Which gas produces most of the bubbles in bread dough? A. OxygenB. MethaneC. Carbon dioxideD....
- 16N.1.SL.TZ0.11: What enables bacteria to produce human growth hormone? A. DNA replication is...
- 16N.3.SL.TZ0.1a: Suggest the purpose of the wire mesh.
- 16M.2.HL.TZ0.2a: (i) Using the nomogram, state the lower weight limit for a woman with the height...
- 16N.2.SL.TZ0.7b: Producers extract phosphates and nitrates from soil. Outline how these ions are used in the...
- 16N.3.HL.TZ0.1b: Sketch on the graph the curve expected if the hydrolysis were performed using papain 0.5 %.
- 17M.1.SL.TZ1.7: In an experiment the effect of changing pH on an enzymatic reaction is tested. Which could be a...
- 17M.2.SL.TZ2.6b: Outline the production of carbohydrates in photosynthesis.
- 17M.3.SL.TZ1.1c: Outline the effect of temperature on the activity of urease enzyme.
- 17M.3.SL.TZ2.1b: State the relationship between body mass and the oxygen consumption of fish.
- 17N.1.SL.TZ0.07: Which property of water accounts for its moderating effects on the Earth’s atmosphere? A....
- 17N.2.SL.TZ0.07b: Explain the process of photosynthesis.
- 17N.3.HL.TZ0.01c: State two photosynthetic pigments that could be identified using chromatography.
- 15M.1.SL.TZ2.10: How can the activity of a human amylase enzyme be increased during a laboratory experiment?A....
- 15M.2.SL.TZ1.4b (i): Draw a graph to show the effect of increasing light intensity on the rate of photosynthesis.
- 15M.2.HL.TZ2.7b: Draw an annotated graph of the effects of light intensity on the rate of photosynthesis.
- 15M.2.SL.TZ1.4a: Distinguish between absorption of red, green and blue light by chlorophyll.
- 15M.1.HL.TZ2.9: Which model represents transcription?
- 15M.1.HL.TZ2.13: What happens during glycolysis for one molecule of glucose? A. Two pyruvates are formed.B. There...
- 15M.1.HL.TZ2.7: What is a consequence of the specific heat capacity for liquid water, ice and water vapour? A....
- 13M.2.HL.TZ2.4a: Define the active site of an enzyme.
- 13M.2.HL.TZ2.7a: Describe four properties of water that are due to hydrogen bonding and polarity.
- 13M.2.SL.TZ1.5a: Describe the properties of water that make it a useful component of blood.
- 13M.1.SL.TZ1.7: What process occurs when fatty acids combine with glycerol to make a triglyceride? A....
- 13M.1.SL.TZ2.10: What contributes to the structure of an enzyme? A. Sequence of bases linked by hydrogen bondsB....
- 13M.3.SL.TZ2.8a: Transport is the function of the protein known as hemoglobin. State the name and function of...
- 11M.1.HL.TZ1.8: The percentage of thymine in the DNA of an organism is approximately 30 %. What is the percentage...
- 11M.1.SL.TZ2.28: Which of the following is part of the process of cellular respiration? A. Changes in the volume...
- 11M.1.SL.TZ2.30: Which variable has the least effect on enzyme activity? A. Temperature B. Light intensity C. pH...
- 11M.1.SL.TZ2.5: What property of water makes it a good evaporative coolant? A. High latent heat of evaporation ...
- 11M.3.SL.TZ1.13c: Outline the activity of guillemots at sea.
- 11M.3.SL.TZ2.7b: Determine the difference between gross photosynthesis and net photosynthesis at 40°C and...
- 11M.3.SL.TZ2.7d (ii): Compare the effect of temperature on photosynthesis with the effect of temperature on respiration...
- 12M.2.HL.TZ1.2a: DNA replication involves a number of enzymes including DNA polymerase. Identify one other enzyme...
- 12M.2.HL.TZ2.5a: List the general functions of non-membrane proteins.
- 12M.2.HL.TZ2.8a: Outline how three properties of water enhance its use by living organisms.
- 12M.1.HL.TZ1.10: How is oxygen produced during photosynthesis? A. Water molecules are split with energy from ATP....
- 12M.1.SL.TZ2.10: How does an increase in temperature affect enzyme activity?
- 09M.1.HL.TZ1.8: In the model of the DNA molecule shown below, which arrows point to covalent bonds? A. I,...
- 10M.2.HL.TZ2.1e: Describe, using the triglyceride levels graph, the results at Site 1 and Site 2 for all of the...
- 10M.2.HL.TZ2.3a: Outline the bonding between DNA nucleotides.
- 10M.1.SL.TZ1.12: A plant is exposed to increasing light intensity from very dim to bright light, while the carbon...
- 10M.1.SL.TZ1.8: Which describes these molecules correctly?
- 10M.1.SL.TZ1.10: The diagram below shows a biochemical pathway in a yeast cell. Which of the following correctly...
- 10M.1.SL.TZ2.11: Which of the following is the best definition of cell respiration? A. A process needed to use...
- 10M.2.SL.TZ1.2d: Simple laboratory experiments show that when the enzyme lactase is mixed with lactose, the...
- 10M.2.SL.TZ2.2d: Outline the role of water in photosynthesis.
- 10M.1.HL.TZ2.8: The table below shows the codons that determine different amino acids in protein...
- 10M.2.SL.TZ2.2b: Explain how chemical bonding between water molecules makes water a valuable coolant in living...
- 11N.1.HL.TZ0.5: Which statement describes glycogen? A. It is a hormone involved in the control of blood glucose....
- 11N.1.HL.TZ0.6: Which molecular structure correctly illustrates two amino acids linked by a peptide bond?
- 11N.2.SL.TZ0.6c: Explain the relationship between the properties of water and its uses in living organisms as a...
- 11N.1.SL.TZ0.10: What does the structure labelled X represent? A. Hydrogen bond B. Phosphate C. Covalent bond D....
- 12N.2.HL.TZ0.7b: Explain the process of DNA replication.
- 12N.2.HL.TZ0.6a: State the role of four named minerals needed by living organisms.
- 12N.3.SL.TZ0.1b (i): Identify the mass above which a man whose height is 185 cm would be classified as obese.
- 09N.3.SL.TZ0.4a: Compare the rate of release of lactate with the rate of release of H+ in contracting muscles...
- 09N.3.SL.TZ0.4c: Predict the results if the data had been collected beyond 12 minutes.
- 15N.1.SL.TZ0.7: Which molecule can be hydrolyzed? A. Glycerol B. Maltose C. Fructose D. Galactose
- 15N.2.SL.TZ0.1a: Identify the most frequent fork length for O. nerka caught during autumn 2008 and winter...
- 13N.1.HL.TZ0.9: This reaction is a step in anaerobic cell respiration in a yeast cell. What are the products...
- 13N.2.HL.TZ0.4a: The graph shows the absorption spectrum for two types of chlorophyll. (i) Sketch on the graph,...
- 09N.1.SL.TZ0.9: Which of the following graphs shows the relationship between substrate concentration and enzyme...
- 09N.1.SL.TZ0.10: Oxygen is produced during photosynthesis. What is the source of this oxygen inside the plant?A....
- 09N.1.HL.TZ0.6: The diagram below represents part of the DNA molecule. What are the parts labelled I, II and...
- 09N.1.HL.TZ0.7: What principle is necessary to prevent mutation of DNA during replication?A. Base pairing is...
- 16N.1.SL.TZ0.10: What is a similarity between DNA and RNA? A. Both are polymers of nucleotides.B. Both are...
- 16M.3.SL.TZ0.2b: Describe the nitrogen composition of the DNA band in the E. coli at generation 1.0.
- 16M.3.SL.TZ0.2d: This experiment was designed to demonstrate whether replication was semi-conservative or...
- 17M.1.SL.TZ1.8: Meselson and Stahl conducted experiments using the isotopes 14N and 15N which showed that DNA...
- 17M.1.SL.TZ2.8: The diagram shows the structure of palmitic acid. What type of fatty acid is palmitic...
- 17M.2.SL.TZ2.1g: The scientists concluded that Epi significantly increased aerobic capacity in leg...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.2.SL.TZ2.1c.i: State the time when the point of fatigue occurred in the Epi–exercise group.
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.2.HL.TZ1.6a: Describe the functioning of immunoglobulins.
- 17M.3.SL.TZ1.2a: Compare and contrast the experimental results for the effect of light intensity on the rate of...
- 17M.3.HL.TZ1.3a: Suggest a hypothesis for the trend in the graph.
- 17M.2.HL.TZ2.6a: Draw molecular diagrams to show the condensation reaction between two amino acids to form a...
- 17M.3.SL.TZ2.1c: Predict the effects of global warming on aerobic respiration in fish.
- 16M.1.HL.TZ0.5: What usually distinguishes DNA from RNA?
- 17N.1.SL.TZ0.09: Three flasks were prepared for an analysis of the activity of amylase. At time zero, each of the...
- 17N.2.SL.TZ0.03b: Water has important solvent properties. Explain these properties using an example to illustrate...
- 17N.3.SL.TZ0.01c: Predict the temperature of the water in the cups after 3 hours.
- 17N.1.HL.TZ0.05: Which of the molecules contain peptide bonds or are sugar molecules?
- 15M.1.HL.TZ2.12: How can the rate of photosynthesis be measured? I. By the amount of oxygen produced II. By the...
- 15M.2.HL.TZ1.2a (ii): Explain the production of lactose-free milk.
- 13M.1.HL.TZ2.9: What is the relationship between enzymes and DNA? A. Enzymes contain the code for DNA.B. Enzymes...
- 13M.2.SL.TZ2.6b: Distinguish between anaerobic and aerobic cell respiration in eukaryotes.
- 13M.1.SL.TZ1.13: What is the source of the oxygen released into the atmosphere in photosynthesis? A. Glucose B....
- 11M.2.HL.TZ2.2a (i): Identify the chemical group labelled I.
- 11M.1.SL.TZ1.12: How do cells capture the energy released by cell respiration? A. They store it in molecules of...
- 11M.1.SL.TZ1.7: Which of the following are connected by hydrogen bonds? A. Hydrogen to oxygen within a molecule...
- 11M.3.SL.TZ1.2c: Amino acid polarity is an important factor in determining the functions of proteins. Explain the...
- 11M.3.SL.TZ2.7d (i): Describe the general pattern of change in photosynthesis in sweet orange as the temperature...
- 12M.2.HL.TZ1.5a: Outline, with examples, the types of carbohydrate found in living organisms.
- 12M.1.SL.TZ1.11: Which chemical is produced during both aerobic and anaerobic respiration in humans? A. Carbon...
- 12M.1.SL.TZ1.9: What occurs during DNA replication? A. DNA polymerase separates the two DNA strands. B. DNA...
- 12M.2.SL.TZ1.3b: Draw a labelled diagram to show how four nucleotides are joined together to form a...
- 12M.2.SL.TZ2.6c: Discuss the relationship between one gene and one polypeptide.
- 12M.2.SL.TZ2.6a: Draw a labelled diagram of the molecular structure of DNA including at least four nucleotides.
- 12M.3.SL.TZ2.2a: List two possible variants in the molecular structure of unsaturated fatty acids.
- 09M.2.HL.TZ1.6a: Distinguish between RNA and DNA.
- 09M.1.HL.TZ1.30: Which of the following graphs represents the effect of changing light intensity on the rate of...
- 09M.2.SL.TZ1.3b: Explain enzyme-substrate specificity.
- 10M.2.HL.TZ1.7b: Draw a labelled diagram to show four DNA nucleotides, each with a different base, linked together...
- 10M.1.SL.TZ1.7: Which substance in prokaryotes contains sulfur? A. DNA B. Phospholipids C. Proteins D. Antibiotics
- 10M.2.SL.TZ1.5a: Explain why DNA must be replicated before mitosis and the role of helicase in DNA replication.
- 11N.1.HL.TZ0.4: What is phosphorus used for in plant cells? A. Structure of hemoglobin B. Composition of...
- 11N.1.HL.TZ0.7: What substance is represented by this structure? A. Glycerol B. Fatty acid C. Cellulose D....
- 12N.1.HL.TZ0.7: What type of bond does Z represent? A. Covalent bondB. Hydrogen bondC. Peptide bondD....
- 12N.2.SL.TZ0.3c: DNA in chromosomes undergoes replication before mitosis. Outline how complementary base pairing...
- 10N.2.SL.TZ0.1e(iii): Compare the mRNA production for the three genes during the submergence period between the two...
- 10N.2.SL.TZ0.1e(i): Determine which gene produced the most mRNA on the first day of the submergence period for...
- 15N.1.HL.TZ0.7: Which always contains carbon, hydrogen and oxygen? I. Carbohydrate II. Protein III. Fat A. I...
- 15N.2.SL.TZ0.1d(i): Compare the protein content for O. nerka caught during autumn 2008 and winter 2009.
- 15N.2.SL.TZ0.6c: Outline the production of a dipeptide by a condensation reaction, showing the structure of a...
- 15N.2.HL.TZ0.7c: Describe the importance of water to living organisms.
- 13N.1.SL.TZ0.9: In enzyme experiments, the rate of enzyme activity often gradually decreases. What is most likely...
- 13N.1.SL.TZ0.8: Which are functions of lipids?A. Hydrophilic solvent and energy storageB. Hydrophobic solvent and...
- 13N.2.SL.TZ0.7b: Some proteins in membranes act as enzymes. Outline enzyme-substrate specificity.
- 16M.1.SL.TZ0.20: What is a feature of shorter wavelength visible radiation? A. It includes violet light.B. It has...
- 16M.2.HL.TZ0.5b: Explain the roles of specific enzymes in prokaryote DNA replication.
- 16N.1.HL.TZ0.7: Olive oil may reduce the risk of coronary heart disease. What is/are the compound(s) responsible...
- 16N.2.SL.TZ0.3b: Identify the following processes as either anabolism or catabolism by placing a tick (√) in the...
- 16M.2.HL.TZ0.5a: Outline the action of enzymes.
- 16N.3.HL.TZ0.1c: Explain what would happen to fish protein hydrolysis if no alkali were added to the reaction vessel.
- 16N.3.SL.TZ0.1c: Discuss whether the apparatus would be suitable for measuring the oxygen consumption of a small...
- 17M.1.SL.TZ2.6: Which molecule diagram corresponds to the name?
- 17M.1.HL.TZ2.5: What characteristic shows that this steroid molecule is a lipid? A. It is made of carbon...
- 17M.3.SL.TZ1.2c: This experiment measured the quantity of oxygen gas released by the water plant. State one other...
- 17M.3.SL.TZ2.1a: Suggest how the oxygen consumption rate is determined using this apparatus.
- 17N.1.SL.TZ0.12: Which process causes ADP to change to ATP? A. Hydrolysis B. Protein synthesis C. DNA...
Sub sections and their related questions
2.1 Molecules to metabolism
- 15M.1.SL.TZ2.8: What are the most frequently occurring elements in living organisms?A. calcium, phosphorus, iron...
- 15M.1.SL.TZ2.9: The image shows the structural formula of a molecule. What is this molecule?A. Amino acidB....
- 15M.1.SL.TZ2.10: How can the activity of a human amylase enzyme be increased during a laboratory experiment?A....
- 15M.1.HL.TZ2.5: What are the most frequently occurring elements in living organisms? A. calcium, phosphorus,...
- 15N.1.SL.TZ0.7: Which molecule can be hydrolyzed? A. Glycerol B. Maltose C. Fructose D. Galactose
- 15N.2.SL.TZ0.1a: Identify the most frequent fork length for O. nerka caught during autumn 2008 and winter...
- 15N.2.SL.TZ0.1b: Distinguish between the fork lengths of O. nerka in autumn 2008 and winter 2009.
- 15N.2.SL.TZ0.1c: Suggest a reason for the variation in fork length of ocean age one O. nerka.
- 15N.2.SL.TZ0.1d(i): Compare the protein content for O. nerka caught during autumn 2008 and winter 2009.
- 15N.2.SL.TZ0.1d(ii): Outline the difficulty in predicting the age of O. nerka from fork length.
- 15N.2.SL.TZ0.1e: Using the data, suggest one reason for the relationship between protein content and fork length.
- 15N.2.SL.TZ0.1f(i): Compare the results shown in the table for monkfish and shark.
- 15N.2.SL.TZ0.1f(ii): Suggest additional information that would be helpful in evaluating these data.
- 15N.2.SL.TZ0.1g: State which type of fish shows the most variation.
- 13N.1.SL.TZ0.7: Which types of molecule are shown in the diagrams?
- 12M.2.HL.TZ1.1e: Outline the relationship between body mass and LCTw for male dolphins.
- 12M.2.HL.TZ1.1f: Suggest one reason for the high LCTw measured for the female dolphin.
- 12M.2.HL.TZ1.5b: Describe the importance of hydrolysis in digestion.
- 12M.1.SL.TZ1.4: Where in the cell do condensation reactions involving amino acids occur? A. Nucleus B. Golgi...
- 12M.1.SL.TZ1.8: Which carbon compound produced by living organisms is inorganic? A. DNA B. Cellulose C. Glucose...
- 12M.2.SL.TZ1.5b: Describe the importance of hydrolysis in digestion.
- 10M.2.HL.TZ1.2b (ii): State the type of chemical reaction that occurs when lactose is digested into glucose and galactose.
- 10M.2.SL.TZ1.2b (ii): State the type of chemical reaction that occurs when lactose is digested into glucose and galactose.
- 09N.1.SL.TZ0.7: Which of the following chemical elements are part of biochemical molecules in living organisms?A....
- 09N.1.SL.TZ0.8: Which of the following is an organic compound made by all plants?A. Carbon dioxideB. DNAC....
- 11N.1.HL.TZ0.4: What is phosphorus used for in plant cells? A. Structure of hemoglobin B. Composition of...
- 11N.1.HL.TZ0.12: What is involved during oxidation? A. The loss of electrons B. The gain of electrons C. The gain...
- 11N.2.SL.TZ0.6a: State one role in living organisms for each of the following: sulfur, calcium, phosphorus and iron.
- 12N.2.HL.TZ0.6a: State the role of four named minerals needed by living organisms.
- 10N.2.SL.TZ0.4a: State four elements that are needed by living organisms, other than carbon, hydrogen and oxygen,...
- 16N.2.SL.TZ0.3a: Define metabolism.
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 17M.1.HL.TZ1.21: Glucose is absorbed through protein channels in the plasma membrane of epithelium cells in the...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.2.HL.TZ1.5c: Distinguish between anabolism, catabolism and metabolism.
- 17M.1.SL.TZ2.6: Which molecule diagram corresponds to the name?
- 17M.1.SL.TZ2.7: The diagram shows a cycle of reactions that occurs in human liver cells. Which term describes...
- 17M.1.SL.TZ2.8: The diagram shows the structure of palmitic acid. What type of fatty acid is palmitic...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive system....
- 17M.1.HL.TZ2.5: What characteristic shows that this steroid molecule is a lipid? A. It is made of carbon...
- 17M.2.HL.TZ2.6a: Draw molecular diagrams to show the condensation reaction between two amino acids to form a...
- 17N.2.SL.TZ0.05a: State one disaccharide and the two monomers from which it can be...
- 17N.2.HL.TZ0.07a: Nitrogen is part of many important substances in living organisms. Draw labelled diagrams to...
2.2 Water
- 15M.1.HL.TZ1.6: What property of water makes it suitable as a coolant?A. It takes a lot of energy to increase the...
- 15M.1.HL.TZ2.7: What is a consequence of the specific heat capacity for liquid water, ice and water vapour? A....
- 15N.2.HL.TZ0.7c: Describe the importance of water to living organisms.
- 13M.2.HL.TZ2.7a: Describe four properties of water that are due to hydrogen bonding and polarity.
- 13M.2.SL.TZ1.5a: Describe the properties of water that make it a useful component of blood.
- 13N.2.HL.TZ0.5a: Water is essential to life on Earth. Outline two properties of water that are important for...
- 13M.1.SL.TZ1.5: Water shows strong cohesive properties. Which of the following can occur because of the cohesive...
- 13M.1.SL.TZ2.8: What property makes water an important coolant in the natural world? A. It is cohesive.B. It...
- 11M.1.HL.TZ1.6: Which statement about water is correct? A. The atoms within a molecule of water are held...
- 11M.1.SL.TZ2.5: What property of water makes it a good evaporative coolant? A. High latent heat of evaporation ...
- 12M.2.HL.TZ2.8a: Outline how three properties of water enhance its use by living organisms.
- 12M.1.HL.TZ1.6: Which statements correctly explain properties of water? I. Water is a useful medium for...
- 12M.1.SL.TZ1.7: Between which atoms do hydrogen bonds form in water? A. Oxygen and hydrogen atoms in the same...
- 09M.1.HL.TZ1.7: Which diagram represents the polarity of a water molecule?
- 09M.1.HL.TZ2.6: Which of the following is true about a polar amino acid and cellulose? A. Both are...
- 09M.1.HL.TZ2.9: Blood is a water-based transport medium. Which property of water makes it a good transport...
- 09M.1.SL.TZ1.9: Which of these molecules is a disaccharide? A. Galactose B. Sucrose C. Cellulose D. Ribose
- 10M.2.HL.TZ2.3b: Explain how chemical bonding between water molecules makes water a valuable coolant in living...
- 10M.2.SL.TZ2.2b: Explain how chemical bonding between water molecules makes water a valuable coolant in living...
- 11N.2.SL.TZ0.6c: Explain the relationship between the properties of water and its uses in living organisms as a...
- 09N.2.SL.TZ0.5c: Explain how the properties of water are significant to living organisms.
- 09N.2.HL.TZ0.7a: Outline the thermal, cohesive and solvent properties of water.
- 16M.1.HL.TZ0.2: Why is sweat a good coolant for the body? A. The arterioles that transfer water to sweat move...
- 16M.2.SL.TZ0.3a: (i) Distinguish between the thermal properties of water and methane. (ii) Explain the reasons...
- 16N.1.SL.TZ0.8: Which properties explain the ability of water to dissolve solutes? I. Polarity of water...
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive system....
- 17M.1.HL.TZ2.7: Which can be explained by the solvent properties of water? A. Sodium chloride is transported as...
- 17M.2.HL.TZ2.3a: Outline the properties of water molecules that permit them to move upwards in plants.
- 17N.1.SL.TZ0.07: Which property of water accounts for its moderating effects on the Earth’s atmosphere? A....
- 17N.2.SL.TZ0.03a: The figure represents a water molecule. Draw a second water molecule to show how bonds can...
- 17N.2.SL.TZ0.03b: Water has important solvent properties. Explain these properties using an example to illustrate...
- 17N.3.SL.TZ0.01a: Calculate the change in temperature in each cup after 20 minutes. Uncovered: Covered with wet...
- 17N.3.SL.TZ0.01b: State two conditions that must be the same for each cup at the start of the experiment.
- 17N.3.SL.TZ0.01c: Predict the temperature of the water in the cups after 3 hours.
- 17N.3.SL.TZ0.01d: Explain, with reference to the thermal properties of water, how this experiment helps demonstrate...
2.3 Carbohydrates and lipids
- 15M.1.HL.TZ1.8: Which sugars are examples of a monosaccharide and disaccharide?
- 15M.1.SL.TZ2.1: Which molecule is a polysaccharide?A. CelluloseB. FructoseC. MaltoseD. Sucrose
- 15M.2.SL.TZ1.2a: Milk contains lactose which some people can digest but some cannot. State what type of sugar...
- 15M.2.SL.TZ1.2b: Milk contains lactose which some people can digest but some cannot. State a function of lactose.
- 15N.1.SL.TZ0.6: Which always contains carbon, hydrogen and oxygen? I. Carbohydrate II. Protein III. Fat A. I...
- 15N.1.HL.TZ0.7: Which always contains carbon, hydrogen and oxygen? I. Carbohydrate II. Protein III. Fat A. I...
- 15M.1.SL.TZ1.8: What are these molecules?
- 15N.2.SL.TZ0.4c: List two examples of polysaccharides.
- 13M.1.HL.TZ1.6: Which molecules are monosaccharides? A. starch, glycogen, celluloseB. sucrose, maltose,...
- 13M.1.HL.TZ2.6: Which molecules show a monosaccharide and a fatty acid?
- 13M.1.HL.TZ2.8: Which carbohydrates are used to provide energy storage in plants and animals?
- 13N.1.SL.TZ0.8: Which are functions of lipids?A. Hydrophilic solvent and energy storageB. Hydrophobic solvent and...
- 13M.1.SL.TZ1.7: What process occurs when fatty acids combine with glycerol to make a triglyceride? A....
- 13N.3.SL.TZ0.3a: Outline the molecular structure of different types of fatty acids.
- 11M.1.SL.TZ2.8: What is the difference between galactose and lactose? A. Lactose is a disaccharide and galactose...
- 12M.2.HL.TZ1.5a: Outline, with examples, the types of carbohydrate found in living organisms.
- 12M.1.HL.TZ1.7: Which sugars are both disaccharides? A. maltose and lactose B. lactose and fructose C. fructose...
- 12M.1.HL.TZ2.7: The diagrams show three representations of the structure of the same chemical substance. What...
- 12M.1.SL.TZ2.6: The diagrams show three representations of the structure of the same chemical substance. What...
- 12M.2.SL.TZ1.5a: Outline, with examples, the types of carbohydrate found in living organisms.
- 12M.3.SL.TZ2.2a: List two possible variants in the molecular structure of unsaturated fatty acids.
- 09M.1.HL.TZ2.36: Which chemical is shown in the diagram below? A. MonosaccharideB. TriglycerideC. Fatty acidD....
- 09M.1.SL.TZ2.8: Which molecule is shown below? A. GlucoseB. GalactoseC. RiboseD. Sucrose
- 10M.2.HL.TZ1.2a: Glucose and galactose are examples of monosaccharides. State one other example of a monosaccharide.
- 10M.2.HL.TZ1.2b (i): There are several different types of carbohydrate. State which type of carbohydrate lactose is.
- 10M.2.HL.TZ1.2b (ii): State the type of chemical reaction that occurs when lactose is digested into glucose and galactose.
- 10M.2.HL.TZ2.1e: Describe, using the triglyceride levels graph, the results at Site 1 and Site 2 for all of the...
- 10M.2.HL.TZ2.1f: Explain the differences in the triglyceride level and butyrate level for the hermit thrush at...
- 10M.2.HL.TZ2.1g: Scientists have hypothesized that the food quality is better at Site 1 than at Site 2. Evaluate...
- 10M.2.HL.TZ2.1h: Suggest one advantage and one disadvantage for blood sampling rather than weighing birds to...
- 10M.1.SL.TZ1.8: Which describes these molecules correctly?
- 10M.1.SL.TZ2.10: Which of the following is a function of cellulose in plants? A. Storage of fat B. Formation of...
- 10M.2.SL.TZ1.2a: Glucose and galactose are examples of monosaccharides. State one other example of a monosaccharide.
- 10M.2.SL.TZ1.2b (i): There are several different types of carbohydrate. State which type of carbohydrate lactose is.
- 10M.2.SL.TZ1.2b (ii): State the type of chemical reaction that occurs when lactose is digested into glucose and galactose.
- 10M.2.SL.TZ2.5a: Outline the role of hydrolysis in the relationships between monosaccharides, disaccharides and...
- 11N.1.HL.TZ0.5: Which statement describes glycogen? A. It is a hormone involved in the control of blood glucose....
- 11N.1.HL.TZ0.7: What substance is represented by this structure? A. Glycerol B. Fatty acid C. Cellulose D....
- 11N.2.SL.TZ0.6b: Outline the role of condensation and hydrolysis in the relationship between fatty acids, glycerol...
- 11N.3.SL.TZ0.1a: Measure the difference between the percentage of overweight men and the percentage of overweight...
- 11N.3.SL.TZ0.1b: State the range of the body mass index (BMI) that corresponds to overweight status.
- 11N.3.SL.TZ0.1c: Compare the percentage of men and women who exercised daily.
- 11N.1.SL.TZ0.8: What is a function of cellulose in plants? A. To form a mesh of fibres in the cell wall B. To...
- 12N.2.HL.TZ0.1a: State the surfactant that contains the least amount of phospholipids.
- 12N.2.HL.TZ0.1b: Compare the composition of natural human surfactant with synthetic surfactants.
- 12N.2.HL.TZ0.1c: Phospholipids found in the surfactants form a surface film on the moist lining of the alveoli....
- 12N.1.HL.TZ0.5: Which structure represents a fatty acid?
- 12N.2.SL.TZ0.5a: Outline the role of condensation and hydrolysis in metabolic reactions involving...
- 12N.3.SL.TZ0.1b (i): Identify the mass above which a man whose height is 185 cm would be classified as obese.
- 10N.2.SL.TZ0.4a: State four elements that are needed by living organisms, other than carbon, hydrogen and oxygen,...
- 09N.3.SL.TZ0.1e: State the body mass index (BMI) below which a person is considered to be underweight.
- 09N.3.SL.TZ0.3: Outline the variation in the structure of fatty acids.
- 16M.1.HL.TZ0.1: Which molecule is a sugar?
- 16M.1.HL.TZ0.3: Which molecule is a polysaccharide? A. GlucagonB. GlucoseC. GlycerolD. Glycogen
- 16M.2.HL.TZ0.2a: (i) Using the nomogram, state the lower weight limit for a woman with the height...
- 16M.2.HL.TZ0.2b: Draw the structure of a saturated fatty acid.
- 16N.1.SL.TZ0.6: Which type of reaction is the breakdown of starch into sugars? A. DenaturationB. ReductionC....
- 16N.1.SL.TZ0.7: The diagram shows a molecular structure. Which type of molecule is shown? A. Amino acidB....
- 16N.1.HL.TZ0.7: Olive oil may reduce the risk of coronary heart disease. What is/are the compound(s) responsible...
- 17M.1.SL.TZ1.6: A polymer of alpha-D-glucose found in plants has mostly 1,4 linkages and some 1,6 linkages. Which...
- 17M.1.HL.TZ1.8: What type of molecule is shown in this diagram? A. Trans saturated fatty acid B. Cis...
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.2.SL.TZ1.6b: Distinguish between the structures of the different types of fatty acids in food.
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive system....
- 17M.2.SL.TZ2.6a: Describe the structure and function of starch in plants.
- 17N.1.SL.TZ0.08: The Framingham heart study was an observational study that went on for 20 years. The following...
- 17N.2.SL.TZ0.05c: Compare and contrast cis-fatty acids and trans-fatty acids.
- 17N.1.HL.TZ0.05: Which of the molecules contain peptide bonds or are sugar molecules?
2.4 Proteins
- 15M.1.SL.TZ2.9: The image shows the structural formula of a molecule. What is this molecule?A. Amino acidB....
- 15M.1.HL.TZ2.6: Where are proteins synthesized by free ribosomes used? A. Outside the cell after secretionB....
- 15M.1.SL.TZ1.8: What are these molecules?
- 15N.2.SL.TZ0.6c: Outline the production of a dipeptide by a condensation reaction, showing the structure of a...
- 13M.1.HL.TZ1.26: A channel protein is used to transport ions across a membrane. What would you expect to find...
- 13N.2.HL.TZ0.8a: Outline the role of condensation and hydrolysis in the relationship between amino acids and...
- 13M.3.SL.TZ2.8a: Transport is the function of the protein known as hemoglobin. State the name and function of...
- 13N.3.SL.TZ0.8a.i: Other than acting as catalysts state three functions of proteins, giving an example of each.
- 11M.1.HL.TZ1.7: Which type of molecule is shown in the diagram below? A. PeptideB. CarbohydrateC. LipidD....
- 11M.1.SL.TZ2.14: How many molecules of water are required to completely hydrolyse a polypeptide made up of 23...
- 11M.3.SL.TZ1.2c: Amino acid polarity is an important factor in determining the functions of proteins. Explain the...
- 12M.2.HL.TZ2.5a: List the general functions of non-membrane proteins.
- 12M.2.SL.TZ2.6c: Discuss the relationship between one gene and one polypeptide.
- 10M.2.HL.TZ2.5b: Distinguish between fibrous and globular proteins with reference to one example of each protein...
- 10M.1.SL.TZ1.7: Which substance in prokaryotes contains sulfur? A. DNA B. Phospholipids C. Proteins D. Antibiotics
- 10M.1.SL.TZ2.7: What is a role of sulfur in living organisms? A. Formation of proteins B. Formation of...
- 10M.3.SL.TZ1.10a: State two functions of proteins, giving a named example of each.
- 10M.3.SL.TZ2.9a: List three functions of proteins, giving a named example of each.
- 11N.1.HL.TZ0.6: Which molecular structure correctly illustrates two amino acids linked by a peptide bond?
- 12N.2.HL.TZ0.1f: Using all the data provided, evaluate the hypothesis that the presence of proteins in surfactants...
- 10N.2.SL.TZ0.4a: State four elements that are needed by living organisms, other than carbon, hydrogen and oxygen,...
- 10N.2.HL.TZ0.4a: State four functions of proteins, giving a named example of each.
- 16M.1.SL.TZ0.3: Which is an effect of protein denaturation? A. The order of amino acids is changed when the...
- 16N.1.SL.TZ0.7: The diagram shows a molecular structure. Which type of molecule is shown? A. Amino acidB....
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 17M.1.SL.TZ1.9: The most abundant structural protein in the human body is found in ligaments and skin. What is...
- 17M.1.SL.TZ1.15: How does the proteome of a species contain a larger number of proteins than genes that code for...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.2.HL.TZ1.6a: Describe the functioning of immunoglobulins.
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive system....
- 17M.2.SL.TZ2.5a: Draw a molecular diagram of an amino acid to show its general structure.
- 17M.3.SL.TZ2.2a: Determine the optimum pH and temperature of keratinase.
- 17M.3.SL.TZ2.2b: Suggest two changes occurring in the reaction vessel that could be used to indicate keratinase...
- 17M.3.SL.TZ2.2c: State two conditions that should be kept constant in both experiments.
- 17N.1.SL.TZ0.06: Which molecule could be hydrolysed into amino acids?
- 17N.1.HL.TZ0.05: Which of the molecules contain peptide bonds or are sugar molecules?
2.5 Enzymes
- 15M.1.HL.TZ1.9: Why does exposure to high temperatures cause an enzyme to lose its biological properties?A. The...
- 15M.1.SL.TZ2.10: How can the activity of a human amylase enzyme be increased during a laboratory experiment?A....
- 15M.2.SL.TZ1.2c: Milk contains lactose which some people can digest but some cannot. Explain the production of...
- 15M.1.HL.TZ2.11: Which is the activation energy of a reaction when it is catalysed by an enzyme?
- 15M.2.HL.TZ1.2a (ii): Explain the production of lactose-free milk.
- 15N.1.HL.TZ0.8: What is decreased when lactase is added to milk? A. Sweetness B. Disaccharides C. Calcium D....
- 13M.2.HL.TZ2.4a: Define the active site of an enzyme.
- 13M.2.HL.TZ2.4b: Explain how the active site promotes enzyme–substrate specificity.
- 13M.2.HL.TZ2.4c: Outline possible effects of acids on enzyme activity.
- 13M.1.HL.TZ1.8: Which graph shows the effect of increasing substrate concentration on enzyme activity?
- 13M.1.HL.TZ1.9: What is produced when the enzyme lactase is added to milk? A. Glucose and galactoseB. LactoseC....
- 13M.1.HL.TZ2.10: For what purpose is the enzyme lactase useful? A. Production of lactose-free milk so that more...
- 13M.2.SL.TZ2.5c: Explain the effect of changes of pH, substrate concentration and temperature on enzyme activity.
- 13N.1.SL.TZ0.9: In enzyme experiments, the rate of enzyme activity often gradually decreases. What is most likely...
- 13N.2.SL.TZ0.7b: Some proteins in membranes act as enzymes. Outline enzyme-substrate specificity.
- 13M.1.SL.TZ2.10: What contributes to the structure of an enzyme? A. Sequence of bases linked by hydrogen bondsB....
- 13M.3.SL.TZ2.8b: Explain the role of enzymes in metabolic pathways.
- 11M.2.HL.TZ2.5a: Outline the effect of temperature and substrate concentration on the activity of enzymes.
- 11M.1.SL.TZ1.8: The graph below shows the effect of substrate concentration on enzyme activity. What conclusion...
- 11M.1.SL.TZ1.11: What is denaturation? A. A structural change of a protein that results in the loss of its...
- 11M.1.SL.TZ2.30: Which variable has the least effect on enzyme activity? A. Temperature B. Light intensity C. pH...
- 12M.1.HL.TZ1.9: Which graph shows the effect of increasing the substrate concentration on enzyme activity?
- 12M.1.SL.TZ2.10: How does an increase in temperature affect enzyme activity?
- 09M.2.HL.TZ1.6c: Outline how enzymes catalyse reactions.
- 09M.2.SL.TZ1.3a: Define active site.
- 09M.2.SL.TZ1.3b: Explain enzyme-substrate specificity.
- 09M.2.SL.TZ2.3b: Explain the effects of pH on enzyme catalysed reactions.
- 09M.1.HL.TZ2.34: Which of the following statements is true about enzymes? A. They are used up in the reactions...
- 09M.1.SL.TZ1.11: What happens as an enzyme becomes denatured? A. The enzyme works faster. B. The enzyme works...
- 10M.2.HL.TZ1.2d: Simple laboratory experiments show that when the enzyme lactase is mixed with lactose, the...
- 10M.2.SL.TZ1.2d: Simple laboratory experiments show that when the enzyme lactase is mixed with lactose, the...
- 10M.2.SL.TZ2.5a: Outline the role of hydrolysis in the relationships between monosaccharides, disaccharides and...
- 10M.2.SL.TZ2.5b: Describe the use of biotechnology in the production of lactose-free milk.
- 10M.2.SL.TZ2.5c: Explain the importance of enzymes to human digestion.
- 11N.2.HL.TZ0.5 b: Many people cannot digest lactose and benefit from a diet containing no lactose. Outline the...
- 11N.2.SL.TZ0.7c: Respiration and other processes in cells involve enzymes. Explain the factors that can affect...
- 12N.2.SL.TZ0.5b: Metabolic reactions are catalysed by enzymes. Explain how enzymes catalyse reactions and how a...
- 16M.2.HL.TZ0.5a: Outline the action of enzymes.
- 16N.1.SL.TZ0.9: A fever in a normally healthy adult during an illness is not usually a problem and can be...
- 16N.1.HL.TZ0.9: It is possible to attach β-galactosidase to alginate beads for use in the production of...
- 16N.3.SL.TZ0.2a: Suggest one reason for differences between the cereal grains, in the percentage of starch...
- 16N.3.SL.TZ0.2b: Suggest one method that could have been used to keep the tubes at a constant temperature.
- 16N.3.SL.TZ0.2c: Explain the importance of having equal quantities of the enzyme at the start of the experiment.
- 16N.3.HL.TZ0.1a: State the effect of enzyme concentration on the hydrolysis of proteins.
- 16N.3.HL.TZ0.1b: Sketch on the graph the curve expected if the hydrolysis were performed using papain 0.5 %.
- 16N.3.HL.TZ0.1c: Explain what would happen to fish protein hydrolysis if no alkali were added to the reaction vessel.
- 17M.1.SL.TZ1.7: In an experiment the effect of changing pH on an enzymatic reaction is tested. Which could be a...
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 17M.1.SL.TZ1.10: The graph shows the effect of increasing the substrate concentration on the rate of an...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.3.SL.TZ1.1a: Outline what the standard deviations reveal about the data from this experiment.
- 17M.3.SL.TZ1.1b: One result in this experiment can be classified as an outlier as its value is very distant from...
- 17M.3.SL.TZ1.1c: Outline the effect of temperature on the activity of urease enzyme.
- 17M.3.SL.TZ1.1d: State one factor that would need to be controlled in this experiment.
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive system....
- 17N.1.SL.TZ0.09: Three flasks were prepared for an analysis of the activity of amylase. At time zero, each of the...
2.6 Structure of DNA and RNA
- 15M.1.SL.TZ2.2: The image shows a DNA nucleotide. Which correctly identifies the parts labelled I and II?
- 15M.1.SL.TZ2.3: Which sequence shows increasing relative size?
- 15N.1.SL.TZ0.8: Which type of bond is identified by the arrow? A. Phosphate B. Hydrogen C. Covalent D. Peptide
- 15N.2.SL.TZ0.5a: Draw a labelled diagram of a section of DNA showing four nucleotides.
- 13M.1.HL.TZ1.7: The base sequence of a fragment of DNA is:ACC GTG CAG GAT What is the base sequence on the...
- 13M.1.HL.TZ1.14: Organisms can be genetically modified to produce the human blood clotting factor IX. What...
- 13N.1.HL.TZ0.8: What is correct for the DNA double helix?
- 13N.2.SL.TZ0.3a: Draw a labelled diagram of the structure of DNA, showing the arrangement of subunits.
- 13M.1.SL.TZ1.10: What links the pairs of complementary bases in a DNA double helix? A. Covalent bondsB. Hydrogen...
- 11M.1.HL.TZ1.8: The percentage of thymine in the DNA of an organism is approximately 30 %. What is the percentage...
- 11M.2.HL.TZ2.2a (i): Identify the chemical group labelled I.
- 11M.2.HL.TZ2.2a (ii): State the type of bond labelled II.
- 11M.1.SL.TZ1.7: Which of the following are connected by hydrogen bonds? A. Hydrogen to oxygen within a molecule...
- 11M.1.SL.TZ1.10: The percentage of thymine in the DNA of an organism is approximately 30 %. What is the percentage...
- 12M.1.HL.TZ2.8: What type of bond is labelled X? A. Ionic B. Peptide C. Covalent D. Hydrogen
- 12M.2.SL.TZ1.3a: The diagram below represents a DNA nucleotide. Identify the phosphate group and...
- 12M.2.SL.TZ1.3b: Draw a labelled diagram to show how four nucleotides are joined together to form a...
- 12M.2.SL.TZ1.3c: State two differences between RNA and DNA nucleotides.
- 12M.2.SL.TZ2.6a: Draw a labelled diagram of the molecular structure of DNA including at least four nucleotides.
- 09M.2.HL.TZ1.6a: Distinguish between RNA and DNA.
- 09M.2.HL.TZ2.2a: Draw a labelled diagram showing two different complementary pairs of nucleotides in a molecule of...
- 09M.1.HL.TZ1.8: In the model of the DNA molecule shown below, which arrows point to covalent bonds? A. I,...
- 09M.2.SL.TZ1.7a: Draw a labelled diagram to show how two nucleotides are joined together in a single strand of DNA.
- 09M.1.HL.TZ2.10: If 15 % of a sample of DNA is thymine, what percentage of the DNA is guanine? A. 15 %B. 30 %C....
- 10M.2.HL.TZ1.7b: Draw a labelled diagram to show four DNA nucleotides, each with a different base, linked together...
- 10M.2.HL.TZ2.3a: Outline the bonding between DNA nucleotides.
- 10M.1.SL.TZ1.11: The following diagram shows a short stretch of DNA. What bases are indicated by labels Y and Z?
- 10M.1.SL.TZ2.8: Which molecules form the nucleotide marked in the diagram? A. phosphate, deoxyribose and...
- 10M.2.SL.TZ2.2a: Outline the bonding between DNA nucleotides.
- 09N.1.HL.TZ0.6: The diagram below represents part of the DNA molecule. What are the parts labelled I, II and...
- 11N.1.SL.TZ0.10: What does the structure labelled X represent? A. Hydrogen bond B. Phosphate C. Covalent bond D....
- 11N.1.SL.TZ0.11: What does the structure labelled Y represent? A. Ribose B. Thymine C. Guanine D. Deoxyribose
- 12N.1.HL.TZ0.6: Which points to the 3′ end of a strand of DNA? A. IB. IIC. IIID. IV
- 12N.1.HL.TZ0.7: What type of bond does Z represent? A. Covalent bondB. Hydrogen bondC. Peptide bondD....
- 12N.1.SL.TZ0.9: The diagram shows part of a DNA molecule. What type of bond does X represent? A. Covalent...
- 09N.2.SL.TZ0.2a: State the type of bonds that (i) connect base pairs in a DNA molecule. (ii) link DNA...
- 09N.2.SL.TZ0.2b: Distinguish between DNA and RNA nucleotides by giving two differences in the chemical structure...
- 16M.1.HL.TZ0.5: What usually distinguishes DNA from RNA?
- 16N.1.SL.TZ0.7: The diagram shows a molecular structure. Which type of molecule is shown? A. Amino acidB....
- 16N.1.SL.TZ0.10: What is a similarity between DNA and RNA? A. Both are polymers of nucleotides.B. Both are...
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.2.SL.TZ1.5a: Outline how translation depends on complementary base pairing.
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive system....
- 17N.1.SL.TZ0.10: For which discovery about DNA do Watson and Crick receive credit? A. DNA is the molecule that...
2.7 DNA replication, transcription and translation
- 15M.2.SL.TZ2.5a: Describe the genetic code and its relationship to polypeptides and proteins.
- 15M.2.HL.TZ2.3c (i): Explain the role of the following enzymes in DNA replication.Helicase
- 15M.1.HL.TZ2.9: Which model represents transcription?
- 15M.1.HL.TZ2.10: Which sequence represents the order of events in protein synthesis?
- 15N.1.SL.TZ0.9: What is required to replicate DNA? A. Temperature of 37 °C B. Free nucleotides carrying A, C, G...
- 15N.1.SL.TZ0.10: How is the information in the genetic code used? A. To predict the genotype of gametes B. To...
- 15N.1.HL.TZ0.9: What is required to replicate DNA? A. Temperature of 37 °C B. Free nucleotides carrying A, C, G...
- 15N.2.SL.TZ0.3c(iii): Deduce the percentage of adenine in Oryza sativa if the proportion of guanine in that organism is...
- 15N.2.SL.TZ0.6b: Explain the process of translation in cells.
- 13M.2.HL.TZ2.5b: Outline transcription in prokaryotes.
- 13M.1.HL.TZ2.9: What is the relationship between enzymes and DNA? A. Enzymes contain the code for DNA.B. Enzymes...
- 13N.1.HL.TZ0.11: A base substitution in a gene has changed a codon. Which of these consequences could result from...
- 13N.2.SL.TZ0.3b: Explain DNA replication.
- 11M.1.HL.TZ1.9: Which of the following are involved in both replication and transcription? A. DNA only B. DNA...
- 12M.2.HL.TZ1.2a: DNA replication involves a number of enzymes including DNA polymerase. Identify one other enzyme...
- 12M.1.HL.TZ1.8: What occurs during DNA replication? A. DNA polymerase separates the two DNA strands. B. DNA...
- 12M.1.HL.TZ2.9: The diagram shows the translation of a mRNA molecule. A tRNA molecule with anticodon CAG...
- 12M.1.SL.TZ2.9: What is formed during transcription? A. RNA strand complementary to DNA strand, formed by RNA...
- 12M.1.SL.TZ1.9: What occurs during DNA replication? A. DNA polymerase separates the two DNA strands. B. DNA...
- 12M.2.SL.TZ2.6c: Discuss the relationship between one gene and one polypeptide.
- 09M.2.HL.TZ2.6c: Explain prokaryotic DNA replication.
- 09M.2.SL.TZ1.7c: Explain the process of translation.
- 09M.1.HL.TZ2.11: On which molecule is a codon found? A. DNAB. mRNAC. tRNAD. rRNA
- 09M.1.SL.TZ1.10: What is a codon? A. A sequence of nucleotides on rRNA that corresponds to an amino acid B. A...
- 09M.1.SL.TZ2.11: What is replicated by a semi-conservative process? A. Messenger RNA (mRNA) onlyB. Messenger RNA...
- 10M.1.SL.TZ1.9: What sequence of processes is carried out by the structure labelled X during translation? A....
- 10M.1.SL.TZ2.9: Which enzyme catalyzes the elongation of the leading strand? A. RNA polymerase B. Helicase C....
- 10M.1.SL.TZ2.12: The graph below shows the effect of temperature on the separation of the strands in DNA to form...
- 10M.2.SL.TZ1.5a: Explain why DNA must be replicated before mitosis and the role of helicase in DNA replication.
- 10M.2.SL.TZ1.5b: Explain how the base sequence of DNA is conserved during replication.
- 10M.1.HL.TZ2.8: The table below shows the codons that determine different amino acids in protein...
- 09N.1.HL.TZ0.7: What principle is necessary to prevent mutation of DNA during replication?A. Base pairing is...
- 09N.1.HL.TZ0.8: What happens during translation?A. Copying of DNA to produce DNAB. Copying of DNA to produce...
- 11N.1.HL.TZ0.8: Which of the following statements is/are correct for DNA replication? I. It occurs during...
- 12N.2.HL.TZ0.7b: Explain the process of DNA replication.
- 12N.2.SL.TZ0.3c: DNA in chromosomes undergoes replication before mitosis. Outline how complementary base pairing...
- 12N.1.SL.TZ0.10: What will be the sequence on the mRNA molecule that is produced when the DNA base sequence...
- 10N.2.SL.TZ0.1e(i): Determine which gene produced the most mRNA on the first day of the submergence period for...
- 10N.2.SL.TZ0.1e(ii): Outline the difference in mRNA production for the three genes during the submergence period for...
- 10N.2.SL.TZ0.1e(iii): Compare the mRNA production for the three genes during the submergence period between the two...
- 10N.2.SL.TZ0.1f: Deduce, using all the data, which gene was used to modify GMFC.
- 10N.2.SL.TZ0.1g: Evaluate, using all the data, how modified varieties of rice could be used to overcome food...
- 10N.2.SL.TZ0.3d: Outline the use of polymerase chain reaction (PCR) to copy and amplify minute quantities of DNA.
- 10N.2.SL.TZ0.4c: Explain the significance of complementary base pairing for replication, transcription and...
- 10N.2.HL.TZ0.1c(i): Determine which gene produced the most mRNA on the first day of the submergence period for...
- 10N.2.HL.TZ0.1c(ii): Outline the difference in mRNA production for the three genes during the submergence period for...
- 10N.2.HL.TZ0.1d: Using only this data, deduce which gene confers submersion resistance to rice plants.
- 09N.2.SL.TZ0.2c: Explain the role of transfer RNA (tRNA) in the process of translation.
- 16M.1.SL.TZ0.5: Research has shown that the genetic code is not entirely universal. Which research finding has...
- 16M.1.SL.TZ0.6: This is a sequence of nucleotides from a section of mRNA. AUGAAACGCACGCAG From which DNA...
- 16M.2.HL.TZ0.5b: Explain the roles of specific enzymes in prokaryote DNA replication.
- 16M.3.SL.TZ0.2a: The density of the DNA band at generation 0 is 1.724 and the density of the dark band of DNA at...
- 16M.3.SL.TZ0.2b: Describe the nitrogen composition of the DNA band in the E. coli at generation 1.0.
- 16M.3.SL.TZ0.2c: Explain the pattern shown in generation 3.0.
- 16M.3.SL.TZ0.2d: This experiment was designed to demonstrate whether replication was semi-conservative or...
- 16N.1.SL.TZ0.11: What enables bacteria to produce human growth hormone? A. DNA replication is...
- 16N.2.SL.TZ0.7b: Producers extract phosphates and nitrates from soil. Outline how these ions are used in the...
- 17M.1.SL.TZ1.8: Meselson and Stahl conducted experiments using the isotopes 14N and 15N which showed that DNA...
- 17M.1.HL.TZ1.9: A strand of mRNA consists of the following nucleotides: AUUCUGGCUA Which of the following...
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 17M.1.SL.TZ1.11: A short sequence of nucleotides reads GGACAGAGCGCAGACGA. In which type of molecule could this...
- 17M.1.SL.TZ1.12: The table shows the genetic code. Which mRNA could code for the sequence...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.2.SL.TZ1.5a: Outline how translation depends on complementary base pairing.
- 17M.2.SL.TZ1.5b: Describe the polymerase chain reaction (PCR), including the role of Taq DNA polymerase.
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.1.SL.TZ2.9: Which are necessary to make DNA replication semi-conservative? I. Separation of the strands by...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive system....
- 17M.2.SL.TZ2.5b: Outline the role of ribosomes in translation.
- 17M.2.HL.TZ2.1f.i: State the name of the molecule which is produced by transcription.
- 17N.1.SL.TZ0.11: Which sequence of bases and amino acids could be produced by transcription and translationof the...
- 17N.2.HL.TZ0.07b: Nitrogen is part of many important substances in living organisms. Distinguish between...
2.8 Cell respiration
- 15M.2.SL.TZ2.5c: Many cell functions, like synthesis of macromolecules and transport, require energy in the form...
- 15M.1.HL.TZ2.13: What happens during glycolysis for one molecule of glucose? A. Two pyruvates are formed.B. There...
- 15M.1.HL.TZ2.14: What happens in both respiration and photosynthesis? A. Triose phosphates are decarboxylated.B....
- 15M.3.SL.TZ1.6c: Explain the role of ATP in muscle contraction.
- 15N.1.SL.TZ0.11: What describes anaerobic cell respiration? A. Glucose break down to pyruvate B. Carbon dioxide...
- 13M.1.HL.TZ1.10: In cell respiration, what is the name of the process where glucose is broken down into...
- 13M.1.HL.TZ2.7: What is formed from glucose during anaerobic cell respiration? A. Lactate and ATP in cytoplasmB....
- 13M.2.SL.TZ2.6b: Distinguish between anaerobic and aerobic cell respiration in eukaryotes.
- 13N.1.HL.TZ0.9: This reaction is a step in anaerobic cell respiration in a yeast cell. What are the products...
- 13M.1.SL.TZ1.12: What substance is produced from glucose during anaerobic respiration in all organisms? A. Carbon...
- 11M.1.SL.TZ1.12: How do cells capture the energy released by cell respiration? A. They store it in molecules of...
- 11M.1.SL.TZ2.11: Which process produces the most ATP per molecule of glucose? A. Anaerobic respiration in a yeast...
- 11M.1.SL.TZ2.28: Which of the following is part of the process of cellular respiration? A. Changes in the volume...
- 11M.3.SL.TZ1.13a: State which activity takes up least of the overall time budget of the guillemots.
- 11M.3.SL.TZ1.13c: Outline the activity of guillemots at sea.
- 11M.3.SL.TZ1.13d: Suggest two reasons, other than breeding, why birds spend more time at the colony than any other...
- 12M.1.SL.TZ1.11: Which chemical is produced during both aerobic and anaerobic respiration in humans? A. Carbon...
- 09M.1.HL.TZ1.9: What happens during the pathway of glycolysis? A. Glucose is broken down into pyruvate. B....
- 09M.2.SL.TZ2.3c: Distinguish between the process of anaerobic respiration in yeast and humans.
- 09M.1.SL.TZ2.14: Which of the following processes produces CO2? I. Glycolysis II. Alcohol (ethanol)...
- 10M.2.HL.TZ2.3c: State a word equation for anaerobic cell respiration in humans.
- 10M.1.SL.TZ1.10: The diagram below shows a biochemical pathway in a yeast cell. Which of the following correctly...
- 10M.1.SL.TZ2.11: Which of the following is the best definition of cell respiration? A. A process needed to use...
- 09N.1.HL.TZ0.9: Which equation shows a chemical reaction that occurs during anaerobic cell respiration?
- 11N.1.HL.TZ0.9: Which of the following processes uses DNA ligase? A. Unwinding DNA B. Gene transfer using...
- 11N.2.SL.TZ0.7a: Distinguish between ventilation, gas exchange and cell respiration.
- 11N.2.SL.TZ0.7b: Outline the process of aerobic respiration.
- 11N.3.SL.TZ0.4b: State the percentage contribution of the different sources of energy at 36% VO2 max in...
- 11N.3.SL.TZ0.4c: Using the data in the graph, describe the relationship between the intensity of exercise and the...
- 11N.3.SL.TZ0.4d: Fat can only be used in aerobic respiration. Suggest reasons for the change in the percentage...
- 12N.1.SL.TZ0.11: The diagram shows anaerobic respiration in yeast cells. What would be produced at X? A. ATP...
- 09N.3.SL.TZ0.4a: Compare the rate of release of lactate with the rate of release of H+ in contracting muscles...
- 09N.3.SL.TZ0.4b: Evaluate the hypothesis that acidosis in muscles is due entirely to H+ production as a result of...
- 09N.3.SL.TZ0.4c: Predict the results if the data had been collected beyond 12 minutes.
- 09N.3.SL.TZ0.9b: Outline the role of oxygen in cellular respiration.
- 16M.1.HL.TZ0.11: Which gas produces most of the bubbles in bread dough? A. OxygenB. MethaneC. Carbon dioxideD....
- 16M.2.SL.TZ0.6b: Outline the process of gas exchange necessary for aerobic respiration in a unicellular eukaryotic...
- 16N.1.SL.TZ0.12: Which pair of molecules are products of aerobic and anaerobic cell respiration in some organisms?
- 16N.2.SL.TZ0.3b: Identify the following processes as either anabolism or catabolism by placing a tick (√) in the...
- 16N.2.SL.TZ0.3c: Describe cell respiration in terms of metabolism.
- 16N.3.SL.TZ0.1a: Suggest the purpose of the wire mesh.
- 16N.3.SL.TZ0.1b: Describe how the apparatus measures the oxygen consumption of the mouse
- 16N.3.SL.TZ0.1c: Discuss whether the apparatus would be suitable for measuring the oxygen consumption of a small...
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.1.SL.TZ2.10: The graph shows the changes in lactate and pyruvate measured in an athlete’s blood during and...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive system....
- 17M.2.SL.TZ2.1b: Describe how increased capillary density could affect the aerobic capacity of muscle.
- 17M.2.SL.TZ2.1c.i: State the time when the point of fatigue occurred in the Epi–exercise group.
- 17M.2.SL.TZ2.1c.ii: Compare and contrast the results for the water–no exercise group and the Epi–no exercise group.
- 17M.2.SL.TZ2.1d: Discuss the effect of exercise on the results of the experiment.
- 17M.2.SL.TZ2.1e: Analyse the effect of exercise on the presence of the mitochondrial proteins in the leg muscle.
- 17M.2.SL.TZ2.1f: Mitochondria are essential for aerobic respiration. Suggest one possible role of the proteins...
- 17M.2.SL.TZ2.1g: The scientists concluded that Epi significantly increased aerobic capacity in leg...
- 17M.3.SL.TZ2.1a: Suggest how the oxygen consumption rate is determined using this apparatus.
- 17M.3.SL.TZ2.1b: State the relationship between body mass and the oxygen consumption of fish.
- 17M.3.SL.TZ2.1c: Predict the effects of global warming on aerobic respiration in fish.
- 17N.1.SL.TZ0.12: Which process causes ADP to change to ATP? A. Hydrolysis B. Protein synthesis C. DNA...
- 17N.1.SL.TZ0.19: An experiment was set up so that each test tube contained water at a pH of 6.3 and a pH...
- 17N.1.HL.TZ0.09: A cricket was placed in a respirometer at constant temperature for ten minutes. The soap bubble...
2.9 Photosynthesis
- 15M.1.SL.TZ2.11: How can the rate of photosynthesis be measured? I. By the amount of oxygen producedII. By the...
- 15M.2.HL.TZ2.7b: Draw an annotated graph of the effects of light intensity on the rate of photosynthesis.
- 15M.2.SL.TZ1.4a: Distinguish between absorption of red, green and blue light by chlorophyll.
- 15M.2.SL.TZ1.4b (i): Draw a graph to show the effect of increasing light intensity on the rate of photosynthesis.
- 15M.2.SL.TZ1.4b (ii): Explain one way of directly measuring the rate of photosynthesis.
- 15M.3.SL.TZ2.8b: List three limiting factors of photosynthesis.
- 15M.1.HL.TZ2.12: How can the rate of photosynthesis be measured? I. By the amount of oxygen produced II. By the...
- 15M.1.HL.TZ2.14: What happens in both respiration and photosynthesis? A. Triose phosphates are decarboxylated.B....
- 15M.2.HL.TZ1.7c: Outline two factors that affect the rate of photosynthesis.
- 15M.3.SL.TZ1.7a: Describe the pattern of CO2 uptake in the control plants.
- 15M.3.SL.TZ1.7b: Outline the effect of increased carbon dioxide concentration on CO2 uptake.
- 15M.3.SL.TZ1.7c: Discuss how CO2 uptake in this investigation may be affected by other limiting factors.
- 13M.2.SL.TZ1.6a: Outline the difference in absorption of red, blue and green light by chlorophyll.
- 13N.1.SL.TZ0.10: What is light energy used for in photolysis?A. Formation of hydrogen and oxygenB. Formation of...
- 13N.2.SL.TZ0.5b: Describe how the rate of photosynthesis can be measured.
- 13N.2.HL.TZ0.4a: The graph shows the absorption spectrum for two types of chlorophyll. (i) Sketch on the graph,...
- 13M.1.SL.TZ1.13: What is the source of the oxygen released into the atmosphere in photosynthesis? A. Glucose B....
- 13M.1.SL.TZ2.12: How does chlorophyll respond to the red, green and blue wavelengths in white light?
- 11M.1.HL.TZ1.10: What is the source of the oxygen released into the air as a product of photosynthesis? A....
- 11M.1.SL.TZ1.13: What is the source of the oxygen released into the air as a product of photosynthesis? A....
- 11M.1.SL.TZ2.12: Which type of light is least useful for photosynthesis in terrestrial plants? A. Blue B. Green...
- 11M.3.SL.TZ2.7a: Identify the optimum temperature for photosynthesis in this plant.
- 11M.3.SL.TZ2.7b: Determine the difference between gross photosynthesis and net photosynthesis at 40°C and...
- 11M.3.SL.TZ2.7c: Deduce what happens to the rate of respiration as the temperature increases between 40°C and 50°C.
- 11M.3.SL.TZ2.7d (i): Describe the general pattern of change in photosynthesis in sweet orange as the temperature...
- 11M.3.SL.TZ2.7d (ii): Compare the effect of temperature on photosynthesis with the effect of temperature on respiration...
- 12M.2.HL.TZ1.7c: Explain the role of limiting factors in photosynthesis.
- 12M.1.HL.TZ1.10: How is oxygen produced during photosynthesis? A. Water molecules are split with energy from ATP....
- 12M.1.SL.TZ2.11: What are the effects of changing carbon dioxide concentration on the rate of photosynthesis? I....
- 12M.1.SL.TZ1.12: How is oxygen produced during photosynthesis? A. Water molecules are split with energy from ATP....
- 09M.2.HL.TZ2.4c: Explain the effect of light intensity and temperature on the rate of photosynthesis.
- 09M.1.HL.TZ1.10: What is light energy used for during photosynthesis? A. To produce carbon dioxide B. To produce...
- 09M.1.HL.TZ1.30: Which of the following graphs represents the effect of changing light intensity on the rate of...
- 09M.2.SL.TZ2.7b: Outline how three different environmental conditions can affect the rate of photosynthesis in...
- 09M.1.HL.TZ2.7: What conclusion can be drawn from examining the action spectrum for a green plant shown...
- 09M.1.SL.TZ2.28: Which of the following colours of light is absorbed the most by chlorophyll? A. BlueB. GreenC....
- 10M.1.SL.TZ1.12: A plant is exposed to increasing light intensity from very dim to bright light, while the carbon...
- 10M.2.SL.TZ2.2d: Outline the role of water in photosynthesis.
- 10M.1.HL.TZ2.10: Why is light important in photosynthesis? A. To produce ATP and split water molecules B. To...
- 09N.1.SL.TZ0.9: Which of the following graphs shows the relationship between substrate concentration and enzyme...
- 09N.1.SL.TZ0.10: Oxygen is produced during photosynthesis. What is the source of this oxygen inside the plant?A....
- 12N.1.HL.TZ0.8: What is the energy absorbed by chlorophyll used directly for in plants? I. To produce ATP II....
- 10N.2.SL.TZ0.4b: Outline how light energy is used and how organic molecules are made in photosynthesis.
- 09N.2.SL.TZ0.6b: Outline anaerobic cell respiration in plant cells.
- 16M.1.SL.TZ0.20: What is a feature of shorter wavelength visible radiation? A. It includes violet light.B. It has...
- 16N.2.SL.TZ0.3b: Identify the following processes as either anabolism or catabolism by placing a tick (√) in the...
- 16N.2.SL.TZ0.7b: Producers extract phosphates and nitrates from soil. Outline how these ions are used in the...
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.3.SL.TZ1.2a: Compare and contrast the experimental results for the effect of light intensity on the rate of...
- 17M.3.SL.TZ1.2b: C. caroliniana can grow well in water at 27°C. This experiment was carried out at...
- 17M.3.SL.TZ1.2c: This experiment measured the quantity of oxygen gas released by the water plant. State one other...
- 17M.1.SL.TZ2.11: What is the relative wavelength in the visible spectrum of red light and blue light and are these...
- 17M.1.SL.TZ2.12: The fungus Rhytisma grows on the leaves of certain trees, causing a yellow leaf area in which...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive system....
- 17M.3.HL.TZ1.3a: Suggest a hypothesis for the trend in the graph.
- 17M.2.SL.TZ2.6b: Outline the production of carbohydrates in photosynthesis.
- 17N.1.SL.TZ0.19: An experiment was set up so that each test tube contained water at a pH of 6.3 and a pH...
- 17N.2.SL.TZ0.07b: Explain the process of photosynthesis.
- 17N.3.SL.TZ0.02a: Identify pigment labelled P.
- 17N.3.SL.TZ0.02b: State a suitable solvent for extracting photosynthetic pigments from plant tissue.
- 17N.3.SL.TZ0.02c: Explain how the pigments in the chromatogram of spinach are identified.
- 17N.3.HL.TZ0.01a: Outline what happens when spinach extract is spotted on a TLC plate and placed into a container...
- 17N.3.HL.TZ0.01b: Explain what the Rf values represent in chromatography.
- 17N.3.HL.TZ0.01c: State two photosynthetic pigments that could be identified using chromatography.
