CSEC Human and Social Biology · May/June 2011 · Paper 2

40 questions and parts from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. 1(a)(i)a)1 markName the vector that transmits dengue.
2. 1(a)(i)b)1 markName the vector that transmits malaria.
3. 1(a)(ii)1 markState the name of the organism that causes dengue.
4. 1(a)(iii)2 marksState TWO signs or symptoms of dengue.
5. 1(a)(iv)1 markIdentify ONE method of preventing the spread of dengue.
6. 1(b)(i)4 marksPlot the monthly flu data for Country X from Table 1 onto the grid in Figure 2, where Country Y is already plotted.
7. 1(b)(ii)3 marksDescribe the trend in flu infection numbers for both Country X and Country Y.
8. 1(b)(iii)2 marksUsing Figure 1 and Figure 2, describe the relationship between tourist arrivals and the spread of flu in both countries.
9. 2(a)(i)3 marksList TWO vitamins (excluding vitamin A) and ONE mineral that might be lacking in her diet.
10. 2(a)(ii)1 markName one water-soluble vitamin.
11. 2(a)(iii)1 markName ONE nutrient other than a vitamin or mineral whose deficiency could cause her weakness and fatigue.
12. 2(a)(iv)1 markIdentify the end-product of digestion for the nutrient named in (a)(iii).
13. 2(b)(i)2 marksState ONE function of each organ labelled A and B in Figure 3.
14. 2(b)(ii)5 marksDescribe how proteins are digested in the stomach and in the small intestine.
15. 2(b)(iii)2 marksSuggest TWO ways amino acids benefit the body.
16. 3(a)(i)1 markName the process that causes perfume scent to travel between rooms.
17. 3(a)(ii)2 marksState how this process differs from osmosis.
18. 3(b)(i)2 marksDefine active transport.
19. 3(b)(ii)1 markState ONE location in the human body where active transport takes place.
20. 3(b)(iii)1 markIdentify the cell structure where active transport occurs.
21. 3(c)(i)3 marksExplain how an issue with pulmonary circulation could lead to her breathing difficulties.
22. 3(c)(ii)3 marksExplain how a defect or weakness in the muscular heart walls would affect systemic circulation.
23. 3(c)(iii)2 marksState TWO functions of the lymphatic system.
24. 4(a)(i)3 marksIdentify the structures labelled A, B, and C in Figure 4.
25. 4(a)(ii)3 marksComplete the statement detailing the movement of the ribcage and diaphragm during inhalation.
26. 4(b)(i)2 marksExplain how transitions between aerobic and anaerobic respiration account for his inability to finish the sprint.
27. 4(b)(ii)2 marksExplain why his heart rate rises during sprinting.
28. 4(b)(iii)2 marksExplain the cause of the pain in his leg muscles.
29. 4(b)(iv)2 marksExplain why he is forced to breathe through his mouth after stopping.
30. 4(b)(v)1 markState how smoking contributed to his failure to complete the sprint.
31. 5(a)(i)2 marksLabel the oviduct and vagina on Figure 5.
32. 5(a)(ii)2 marksLabel the prostate gland and urethra on Figure 6.
33. 5(a)(iii)2 marksState ONE key difference between the male and female reproductive systems regarding the routing and passage of gametes and urine.
34. 5(b)5 marksDescribe the THREE distinct stages of the birth process.
35. 5(c)(i)2 marksSuggest ONE natural method of birth control and state ONE disadvantage associated with it.
36. 5(c)(ii)2 marksState TWO benefits of family planning programs to a country.
37. 6(a)(i)4 marksDefine the terms: Biodegradable, Landfill, Sewage, and Pollutant.
38. 6(a)(ii)2 marksIdentify TWO methods of decreasing solid waste volume other than reducing initial waste production.
39. 6(b)4 marksExplain how proper construction and siting of pit latrines improve community health where pipe-borne water is unavailable.
40. 6(c)5 marksOutline the content for an informational brochure addressing the cause of cholera, its signs and symptoms, and prevention methods.