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2 marksExcretion and Homeostasis

CSEC Human and Social Biology · 2021 · Paper 2 · Question 3(a)

Figure 2 shows a cross-section of the skin.

Identify EACH structure labelled A and B in Figure 2.

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Other parts of this question

  1. 3(b)Complete the paragraph describing homeostatic regulation by selecting the TWO correct phrases from the provided box.[2 marks]
  2. 3(c)State TWO responses that occur in the body when carbon dioxide levels in the blood increase.[2 marks]
  3. 3(d)(i)Explain why the friends experienced frequent urination.[2 marks]
  4. 3(d)(ii)Explain why the friends experienced extreme thirst.[2 marks]
  5. 3(e)(i)State the effect that drinking alcoholic beverages would have on Pedro's blood glucose levels.[1 mark]
  6. 3(e)(ii)Explain how Pedro's body would normally respond to eliminate the effect stated in (e)(i).[2 marks]
  7. 3(e)(iii)Suggest the disease from which Pedro is MOST likely suffering and state why he would have experienced dizzy spells and lethargy.[2 marks]

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