CAPE Biology Unit 2 · 2011 · Paper 1

43 multiple-choice items from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. Q11 mark · multiple choiceItem 1 refers to the following diagram which represents a chloroplast. Ribulose biphosphate carboxylase can be found in Region
2. Q21 mark · multiple choiceThe electrons from non-cyclic photophosphorylation pass into the Calvin Cycle via
3. Q31 mark · multiple choiceItem 3 refers to the reaction scheme below which shows the dark reaction pathway of the Calvin Cycle occurring for about 20 seconds. Which of the following correctly identifies the compounds, X and Y?
4. Q41 mark · multiple choiceThe yield of greenhouse crops is higher than that of field crops, due to increased photosynthetic activity by the plants. Which of the following factors may contribute to this? I. Constant application of farmyard manure…
5. Q51 mark · multiple choiceWhich of the following substances are present in the matrix of a mitochondrion? I. Glucose II. Adenosine diphosphate III. Adenosine triphosphate IV. Acetyl co-enzyme A
6. Q61 mark · multiple choiceDuring aerobic respiration in mammals, pyruvic acid is
7. Q71 mark · multiple choiceItems 7 - 8 refer to the apparatus below which is set up to determine the rate of respiration of germinating seeds. Which of the following statements explain why the apparatus is left in the water for five minutes…
8. Q81 mark · multiple choiceItems 7 - 8 refer to the apparatus below which is set up to determine the rate of respiration of germinating seeds. Another set of apparatus is set up in exactly the same way but glass beads are used instead of…
9. Q91 mark · multiple choiceItem 9 refers to the diagram below which shows how energy flows in an ecosystem. Sunlight \rightarrow Grass \rightarrow Grasshopper \rightarrow Lizard \rightarrow Hawk At which of the following stages is the…
10. Q101 mark · multiple choiceIn the 1950's, G. F. Gause observed that two species of flour beetle, Tribolium confusum and Tribolium castaneum, survived well on their own. However, when they were put together, only one of the species survived. This…
11. Q111 mark · multiple choiceItem 11 refers to an ocean food pyramid. The number in brackets represents the weight of the organism. The percentage of energy available for transfer to a person eating 0.5 kilograms of tuna is approximately
12. Q121 mark · multiple choiceWhich sequence correctly represents the action of nitrifying bacteria?
13. Q131 mark · multiple choiceThe number and range of different species found in an ecosystem are called its
14. Q151 mark · multiple choiceItem 15 refers to the diagram below that shows a simple food web. Which of the following organisms is INCORRECTLY identified with its trophic level?
15. Q161 mark · multiple choiceItem 16 refers to the diagram below which shows a transverse section of a typical dicotyledonous root. The Casparian strip is found in the layer labelled
16. Q171 mark · multiple choiceItem 17 refers to the diagram below which shows three adjacent plant cells, I, II and III. The values of their water potentials are given in kPa. In which direction would there be a NET flow?
17. Q181 mark · multiple choiceThe function of the companion cell in mature phloem tissue is to
18. Q191 mark · multiple choiceItem 19 refers to the following three-dimensional diagram of part of a plant stem. Which labelled part is living but lacks a nucleus?
19. Q201 mark · multiple choiceThe tunica externa found in the walls of certain blood vessels is made up of MAINLY
20. Q211 mark · multiple choiceThe first sound in the cardiac cycle is caused by the
21. Q221 mark · multiple choiceItem 22 refers to the following diagram of the heart and associated blood vessels. The inferior vena cava is represented by
22. Q231 mark · multiple choiceWhich of the following structures must be stimulated to increase heart rate?
23. Q241 mark · multiple choiceItem 24 refers to the graph below which shows the sigmoid (S-shaped) dissociation curve for haemoglobin of a human adult. During cycling, the partial pressure of oxygen found in the pulmonary vein leaving the lungs and…
24. Q251 mark · multiple choiceA diabetic administers an injection of insulin into the body. How does this lead to a lowering of blood glucose concentration?
25. Q261 mark · multiple choiceBananas produced in the Caribbean are exported to markets all over the world. The bananas are harvested mature but still green, yet must arrive at the markets ready to eat. Which of the following procedures ensures that…
26. Q271 mark · multiple choiceItem 27 refers to the following diagram of the glomerulus and Bowman's capsule of a nephron. If the diameter of the blood vessel is made smaller at X, a possible outcome is that
27. Q281 mark · multiple choiceItem 28 refers to the table below which shows volume of water reabsorbed in the different regions of the human kidney nephrons. The total volume of filtrate produced by the glomerulus is 180 litres per day. What is the…
28. Q291 mark · multiple choiceItem 29 refers to the diagram below showing the gap between two neurones. Where is acetyl choline stored and secreted?
29. Q311 mark · multiple choiceAIDS is caused by a
30. Q321 mark · multiple choiceA disease that develops slowly and persists for a long time is BEST described as
31. Q331 mark · multiple choiceThe organism that causes AIDS infects and destroys cells of the body's immune system so that their number gradually decreases. These cells are known as
32. Q341 mark · multiple choiceWhich of the following statements is NOT an explanation of the way in which antibodies work to protect the body from pathogens?
33. Q351 mark · multiple choiceItem 35 refers to the following diagram. Which of the following correctly identifies the structure labelled X in the diagram?
34. Q361 mark · multiple choiceItem 36 refers to the following diagram. The structure labelled Y is
35. Q371 mark · multiple choiceWhich of the following is true for mast cells?
36. Q381 mark · multiple choiceItem 38 refers to the following diagram of the structure of the human immunodeficiency virus. The components of the virus which are considered to be important in producing a vaccine against the virus are the
37. Q391 mark · multiple choiceA runner prepares for six months to run a marathon, by exercising for three hours daily. This MOST likely results in an increase in I. cardiac output II. tidal volume III. muscle strength IV. blood pressure
38. Q401 mark · multiple choiceBody Mass Index (BMI) is now used as a simple means of assessing obesity. Which of the following formulae is used to calculate BMI?
39. Q411 mark · multiple choiceInjecting virus antigens into the body results in
40. Q421 mark · multiple choiceWhich of the following is NOT a possible cause of hypertension?
41. Q431 mark · multiple choiceOne effect of alcohol consumption is that it
42. Q441 mark · multiple choiceIt is believed that tar in cigarette smoke causes
43. Q451 mark · multiple choiceWhich of the following BEST describes tolerance, a form of physical drug dependence?