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3 marksCells and Cell Specialisation

CSEC Biology · January 2009 · Paper 2 · Question 2(a)(i)

Figure 2 shows a section through human skin.

Identify the regions indicated by the lines numbered 1-3.

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Other parts of this question

  1. 2(a)(ii)Identify from the diagram TWO structures which aid in temperature regulation in humans.[2 marks]
  2. 2(a)(iii)State TWO functions of the skin other than temperature regulation.[2 marks]
  3. 2(b)(i)Mr Firebon was badly burnt and lost all of Region 1 shown in Figure 2 on page 6. Suggest TWO ways in which the functioning of the skin would be affected.[4 marks]
  4. 2(b)(ii)Sometimes burns are treated by grafting onto the burnt area skin taken from another part of a person's own body. Outline ONE advantage of this procedure.[2 marks]
  5. 2(c)Suggest ONE reason why a plant may also need to regulate its temperature.[2 marks]

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