CAPE Biology Unit 2 · 2013 · Paper 1

44 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 shows the structure of a chloroplast. The photosystems are located in the structure labelled
2. Q21 mark · multiple choiceThe role of the antenna complex in Photosystems I and II is to
3. Q31 mark · multiple choiceItem 3 refers to the following diagram which outlines the events of the Calvin cycle. 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 MOST likely contribute to this? I. Constant application of…
5. Q51 mark · multiple choiceMitochondria in muscle have more cristae than mitochondria in skin cells. What is the significance of this?
6. Q61 mark · multiple choiceDuring aerobic respiration in mammals, pyruvic acid is
7. Q71 mark · multiple choiceWhich of the following contributes MOST electrons to the electron transport chain?
8. Q81 mark · multiple choiceItem 8 refers to the following flow diagram which shows the pathways involved in anaerobic respiration in yeast. Which of the stages, labelled 1, 2 and 3, involve(s) decarboxylation?
9. Q91 mark · multiple choiceItem 9 refers to the following two types of biological pyramids, labelled X and Y, which represent different parameters of a particular food chain. Which of the following correctly identifies the pyramids and 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 the following diagram which shows the nitrogen cycle. At which stage does denitrification occur?
12. Q121 mark · multiple choiceItem 12 refers to the following diagram which is a schematic summary of the operational processes in an ecosystem. The arrow labelled X MOST likely represents
13. Q131 mark · multiple choiceThe number and range of different species found in an ecosystem are called its
14. Q141 mark · multiple choiceWhich of the following does NOT explain how deforestation might increase the risk of flooding?
15. Q151 mark · multiple choiceWhich of the following is NOT a conservation method used to maintain biodiversity?
16. Q161 mark · multiple choiceItem 16 refers to the following diagram which shows a transverse section of a typical dicotyledonous root. The Casparian strip is found in the layer labelled
17. Q171 mark · multiple choiceIn a study of water movement in plants, the cut end of a leafy shoot is placed in a dilute solution of a dye. After a few hours, deposits of the dye accumulate in the leaves. The rate of movement of the dye up the stem…
18. Q181 mark · multiple choiceItem 18 refers to the following three-dimensional diagram of part of a plant stem. Which labelled part contains rough endoplasmic reticulum?
19. Q191 mark · multiple choiceWhich of the following statements is true according to the mass (pressure) flow hypothesis?
20. Q201 mark · multiple choiceThe tunica externa found in the walls of arteries and veins is made up of MAINLY
21. Q211 mark · multiple choiceItem 21 refers to the following graph which shows changes in blood pressure in the left ventricle during the cardiac cycle. Valves open and close due to changes in pressure. Which of the following labels, I, II, III…
22. Q221 mark · multiple choiceItem 22 refers to the following diagram of the heart and associated blood vessels. The inferior vena cava is represented by
23. Q231 mark · multiple choiceWhich of the following structures must be stimulated to increase heart rate?
24. Q241 mark · multiple choiceItem 24 refers to the following graph 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…
25. Q251 mark · multiple choiceWhich of the following is an example of positive feedback?
26. Q261 mark · multiple choiceWhen a decrease in normal blood glucose concentration is detected, Hormone X is secreted. What is Hormone X and precisely where is it produced?
27. 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
28. Q281 mark · multiple choiceItem 28 refers to the following illustration of a section of a kidney nephron, drawn by a student. The drawing above MOST likely represents the
29. Q291 mark · multiple choiceItem 29 refers to the following diagram. Diffusion of sodium ions into the axon occurs at
30. Q311 mark · multiple choiceAIDS is caused by a
31. Q321 mark · multiple choiceA disease that develops slowly and persists for a long time is BEST described as
32. Q331 mark · multiple choiceA highly malignant tumour linked to ultraviolet radiation is a
33. Q341 mark · multiple choiceWhich of the following types of lymphocytes do NOT release lymphokines when stimulated?
34. Q351 mark · multiple choiceThe monomers that make up the heavy and light chains of an antibody molecule are joined by
35. Q361 mark · multiple choiceWhich of the following statements BEST describes the term 'immune response'?
36. Q371 mark · multiple choiceWhich of the following is true for mast cells?
37. Q381 mark · multiple choiceA key feature of monoclonal antibodies is that they are manufactured by
38. Q391 mark · multiple choiceWhich of the following is NOT an example of the use of monoclonal antibodies?
39. Q401 mark · multiple choiceBody Mass Index (BMI) may be used as an indicator for obesity. Which of the following BMI values BEST reflects that of an obese individual?
40. Q411 mark · multiple choiceInjecting virus antigens into the body results in
41. Q421 mark · multiple choiceWhich of the following BEST describes the disease atherosclerosis?
42. Q431 mark · multiple choiceItem 43 refers to the following table which shows the number of cases of dengue haemorrhagic fever (per 100 000 inhabitants) reported in the Americas for 2001 and 2002. \begin{tabular}{|c|c|} \hline 2001 & 2002 \\…
43. Q441 mark · multiple choiceIt is believed that tar in cigarette smoke causes
44. Q451 mark · multiple choiceWhich two stages of alcoholic liver disease are reversible?