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2 marksNutrition and the Digestive System

CSEC Human and Social Biology · January 2016 · Paper 2 · Question 1(a)(i)

A diagram shows a cross-section of a molar tooth with labelled parts.

Identify structure B shown in Figure 1 and state its function.

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Other parts of this question

  1. 1(a)(ii)Label A indicates a cavity. State TWO factors required for tooth decay to occur.[2 marks]
  2. 1(a)(iii)State TWO measures, other than altering diet, that reduce cavity formation.[2 marks]
  3. 1(b)(i)Identify the age group that is most severely affected by AIDS.[1 mark]
  4. 1(b)(ii)Based on Figure 2, determine whether the male or female population has more individuals suffering from AIDS in the 45–69 age bracket.[1 mark]
  5. 1(b)(iii)Predict THREE aspects of the socioeconomic future for the population depicted in Figure 2.[3 marks]
  6. 1(c)Explain TWO factors that have contributed to the decline in both the incidence and mortality rates of infectious diseases since 1900.[4 marks]

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