CSEC Human and Social Biology · January 2017 · Paper 2

32 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)1 markIdentify the drug that has the most negative impact on the user.
2. 1(a)(ii)2 marksState which two drugs have the greatest impact on users' relationships with friends and family, and academic life.
3. 1(b)(i)1 markIdentify which gender is most likely to engage in substance abuse.
4. 1(b)(ii)1 markIdentify which substance is most likely to be abused by persons across all economic backgrounds.
5. 1(b)(iii)1 markState which income bracket shows the highest levels of drug abuse.
6. 1(c)(i)3 marksSuggest three health problems that she could develop as a result of her excess weight.
7. 1(c)(ii)3 marksExplain how it is possible for someone to be overweight and simultaneously suffer from malnutrition.
8. 1(c)(iii)3 marksState the benefits of eating more fruits and vegetables to her health.
9. 2(a)4 marksComplete the concept map by stating the correct labels for (i), (ii), (iii), and (iv).
10. 2(b)(i)1 markIdentify the stage in the cycle at which carbon dioxide enters the food chain.
11. 2(b)(ii)1 markIdentify the stage in the carbon cycle where human activities have a major effect.
12. 2(c)(i)2 marksState two reasons why plants require adequate amounts of nitrogen.
13. 2(c)(ii)2 marksName two types of soil bacteria that provide nitrogen.
14. 2(d)(i)3 marksSuggest three pollutants that may run off from the garden into the river.
15. 2(d)(ii)2 marksOutline two effects of these pollutants on living organisms in the aquatic ecosystem.
16. 3(a)(i)1 markState one function of bone, other than protecting internal organs.
17. 3(a)(ii)2 marksState two functions of the human vertebral column.
18. 3(b)3 marksComplete Table 3 by providing the location of cartilage at (i), structure of bone at (ii), and function of cartilage at (iii).
19. 3(c)(i)2 marksIdentify the type of joint found in the knee region and describe the type of movement associated with it.
20. 3(c)(ii)2 marksDescribe the difference in terms of movement between the hip joint and the joints between the skull bones.
21. 3(d)(i)4 marksExplain why vitamin D is necessary for bone formation and state the name of the deficiency disease.
22. 3(d)(ii)1 markSuggest which mineral is most likely being lost from bone due to high intake of carbonated beverages.
23. 4(a)(i)4 marksDistinguish between nerves and neurones, and between sensory and motor neurones.
24. 4(a)(ii)2 marksIdentify the term for the junction where two neurones meet, and the chemical used to transmit signals across this junction.
25. 4(b)(i)5 marksIdentify whether this reflex is spinal or cranial, and outline the four steps involved in the reflex action.
26. 4(b)(ii)4 marksName two pituitary hormones released within the next 16 days and explain one function of each.
27. 5(a)6 marksState two cardiovascular diseases caused by poor diets and explain how these diseases develop.
28. 5(b)4 marksSuggest two signs or symptoms Peter might experience, and two ways he can manage the disease.
29. 5(c)5 marksIdentify the age group with the greatest risk of a heart attack using Table 4, and discuss how smoking contributes to an increased risk of a heart attack.
30. 6(a)3 marksState one advantage and two disadvantages of using landfills.
31. 6(b)6 marksExplain three differences between an open dump and a sanitary landfill.
32. 6(c)6 marksName and explain three measures that can be used to control solid waste volume in a community.