| Date | November 2015 | Marks available | 1 | Reference code | 15N.1.HL.TZ0.8 |
| Level | Higher level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 8 | Adapted from | N/A |
Question
What is decreased when lactase is added to milk?
A. Sweetness
B. Disaccharides
C. Calcium
D. Monosaccharides
Markscheme
B
Examiners report
[N/A]
Syllabus sections
Show 56 related questions
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- 17M.3.SL.TZ1.1c: Outline the effect of temperature on the activity of urease enzyme.
- 17M.3.SL.TZ1.1b: One result in this experiment can be classified as an outlier as its value is very distant...
- 17M.3.SL.TZ1.1a: Outline what the standard deviations reveal about the data from this experiment.
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive...
- 17M.1.SL.TZ1.7: In an experiment the effect of changing pH on an enzymatic reaction is tested. Which could be...
- 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...
- 16N.3.HL.TZ0.1c: Explain what would happen to fish protein hydrolysis if no alkali were added to the reaction...
- 16N.3.HL.TZ0.1b: Sketch on the graph the curve expected if the hydrolysis were performed using papain 0.5 %.
- 16N.3.HL.TZ0.1a: State the effect of enzyme concentration on the hydrolysis of proteins.
- 16N.3.SL.TZ0.2c: Explain the importance of having equal quantities of the enzyme at the start of the experiment.
- 16N.3.SL.TZ0.2b: Suggest one method that could have been used to keep the tubes at a constant temperature.
- 16N.3.SL.TZ0.2a: Suggest one reason for differences between the cereal grains, in the percentage of starch...
- 16M.2.HL.TZ0.5a: Outline the action of enzymes.
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- 16N.1.SL.TZ0.9: A fever in a normally healthy adult during an illness is not usually a problem and can be...
- 15M.1.HL.TZ1.9: Why does exposure to high temperatures cause an enzyme to lose its biological properties?A....
- 15M.1.SL.TZ2.10: How can the activity of a human amylase enzyme be increased during a laboratory experiment?A....
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- 15M.1.HL.TZ2.11: Which is the activation energy of a reaction when it is catalysed by an enzyme?
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- 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....
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- 13M.2.SL.TZ2.5c: Explain the effect of changes of pH, substrate concentration and temperature on enzyme activity.
- 13N.2.SL.TZ0.7b: Some proteins in membranes act as enzymes. Outline enzyme-substrate specificity.
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- 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...
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- 11M.1.SL.TZ2.30: Which variable has the least effect on enzyme activity? A. Temperature B. Light intensity...
- 12M.1.HL.TZ1.9: Which graph shows the effect of increasing the substrate concentration on enzyme activity?
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- 09M.2.HL.TZ1.6c: Outline how enzymes catalyse reactions.
- 09M.2.SL.TZ1.3b: Explain enzyme-substrate specificity.
- 09M.2.SL.TZ1.3a: Define active site.
- 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...
- 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...
- 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.
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