DP Biology Questionbank

• Syllabus

Option D: Human physiology (Additional higher level topics)

Sub sections and their related questions

D.5 Hormones and metabolism

• 15M.3.HL.TZ1.13a: State the mean height difference between the budesonide group and the placebo group at the start...
• 15M.3.HL.TZ1.13b: The mean age for starting the treatment was nine years. Suggest a reason for the choice of this age.
• 15M.3.HL.TZ1.13c: Describe the effect of budesonide on the mean difference in height, during the period of treatment.
• 15M.3.HL.TZ1.13d: Evaluate the long-term after-effect of budesonide treatment on height.    
• 15M.3.HL.TZ1.13e: Suggest one significant shortcoming in the data.
• 15M.3.SL.TZ1.2b: Outline the benefits of using iodine as a dietary supplement.
• 15N.3.HL.TZ0.14a: State the pathway by which hormones travel from the hypothalamus to the anterior pituitary gland.
• 13M.3.HL.TZ1.13a: Distinguish between the mode of action of steroid and peptide hormones.
• 12M.3.HL.TZ2.14a (i): State one example of a steroid hormone.
• 12M.3.HL.TZ2.14a (ii): State one example of a hormone that is a tyrosine derivative.
• 12M.3.HL.TZ2.14b: Outline the hormonal control of digestive juice secretion in the stomach.
• 10M.3.HL.TZ1.14a (i): Define hormones.
• 10M.3.HL.TZ1.14a (ii): State one type of hormone, giving an example.
• 09N.3.HL.TZ0.14b: Define hormone.
• 10N.3.HL.TZ0.14d: State an example of a protein hormone.
• 16M.3.HL.TZ0.19d: Outline the control of milk secretion by oxytocin and prolactin.
• 16M.3.HL.TZ0.19e: The diagram represents a lobule from a mammary gland. The mammary gland is an example of an...
• 16N.3.HL.TZ0.20a: On the diagram, label a (i) second messenger.  (ii) gene regulatory protein.
• 16N.3.HL.TZ0.20b: Outline one characteristic of steroid hormones that allows them to readily diffuse through cell...
• 16N.3.HL.TZ0.20c: Compare and contrast the mechanisms of action of peptide and steroid hormones.
• 17M.1.SL.TZ1.10: The graph shows the effect of increasing the substrate concentration on the rate of an...
• 17M.3.HL.TZ1.20a: A good marker of dietary intake of iodine is the urinary iodine level (UI). A study was carried...
• 17M.3.HL.TZ1.20b: Outline the need for iodine in the endocrine system.
• 17M.3.HL.TZ1.20c: Growth hormones are examples of peptide hormones. Explain the mechanism of action of peptide...
• 17M.3.HL.TZ1.21b.ii: Explain how the increase in CO2 concentration affects the release of oxygen to respiring cells.
• 17M.3.HL.TZ2.22: Explain the role of receptors in mediating the action of both steroid and protein hormones.
• 17N.3.HL.TZ0.20a.i: Thyroxin is a hormone produced in the thyroid gland. State one function of thyroxin.
• 17N.3.HL.TZ0.20a.ii: The action of thyroxin is similar to steroid hormones. Describe the action of steroid hormones.
• 17N.3.HL.TZ0.20b: The World Health Organization recommends that the iodine intake should be supplemented in...

D.6 Transport of respiratory gases

• 15M.3.HL.TZ1.14c (i): Although some CO2 entering the blood simply dissolves in the plasma, most enters the erythrocytes...
• 15N.3.HL.TZ0.14d(i): Using the graph, draw a line to show how the oxygen dissociation curve changes with the Bohr shift.
• 15N.3.HL.TZ0.14d(ii): Explain the role of the Bohr shift during vigorous exercise.
• 13M.3.HL.TZ1.12a: Estimate the change in the arterial oxygen saturation between 30 and 60 seconds in non-athletes...
• 13M.3.HL.TZ1.12b (i): Compare the effect of hypoxic concentrations on athletes and non-athletes during exercise.
• 13M.3.HL.TZ1.12b (ii): Suggest a reason for the differences.
• 13M.3.HL.TZ1.12c: Explain how the body prevents oxygen saturation levels from falling by more than a small amount...
• 13M.3.HL.TZ1.12d: Hypoxic concentrations also occur at high altitudes. Explain one effect of high altitude on...
• 11M.3.HL.TZ1.14b (i): State the possible cause of the curve shifting from A to B.
• 11M.3.HL.TZ1.14b (ii): On the graph, draw the curve for myoglobin.
• 12M.3.HL.TZ1.15: Explain the oxygen dissociation of myoglobin, completing the graph below to support your answer....
• 12M.3.HL.TZ2.14c: Outline how exercise causes an increase in the ventilation rate.
• 10M.3.HL.TZ1.13a: Outline the changes in the partial pressures of carbon dioxide and oxygen as altitude increases.
• 10M.3.HL.TZ1.13b: Predict, with a reason, how the ventilation rate will change as a climber ascends from sea level...
• 10M.3.HL.TZ1.13c (ii): Suggest a reason for the low arterial partial pressure of carbon dioxide at the summit.
• 10M.3.HL.TZ1.13d: State one adaptation of people who live permanently in high altitude areas.
• 12N.3.HL.TZ0.13a: Calculate the percentage increase of myeloperoxidase between Hyde Park and Oxford Street for...
• 12N.3.HL.TZ0.13b (i): Compare the changes in exhaled breath pH caused by walking through Hyde Park and along Oxford...
• 12N.3.HL.TZ0.13b (ii): Explain the changes in exhaled breath pH caused by walking along Oxford Street in people with...
• 09N.3.HL.TZ0.15: Explain how and why ventilation rate varies with exercise.
• 10N.3.HL.TZ0.15: Explain the oxygen dissociation curves of adult hemoglobin, fetal hemoglobin and myoglobin.
• 09N.3.SL.TZ0.5b: Outline the role of myoglobin in muscle fibres.
• 09N.3.SL.TZ0.6b: Compare the distribution of blood flow at rest and during exercise.
• 16M.3.HL.TZ0.21d: Explain the role of chemoreceptors in the regulation of ventilation rate.
• 17M.1.SL.TZ1.10: The graph shows the effect of increasing the substrate concentration on the rate of an...
• 17M.3.HL.TZ1.21a.i: Outline the main changes in the lungs that occur in patients with emphysema.
• 17M.3.HL.TZ1.21a.ii: State a treatment for emphysema.
• 17M.3.HL.TZ1.21b.i: An increase in metabolic activity results in greater release of CO2 into the blood. On the graph,...
• 17M.3.HL.TZ1.21b.ii: Explain how the increase in CO2 concentration affects the release of oxygen to respiring cells.
• 17M.3.HL.TZ2.19b.iv: Sometimes hyperkalemia occurs as a body tries to respond to low blood pH. State the normal range...
• 17M.3.HL.TZ2.19b.v: Explain how low blood pH causes hyperventilation (rapid breathing).
• 17N.3.HL.TZ0.23: Discuss high altitude training for athletes.