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2 marksExcretion and Homeostasis

CSEC Integrated Science · 2005 · Paper 2 · Question 5(b)(i)b)

Figure 9 illustrates a nephron from the kidney.

Explain your reasoning for the answer given in (b)(i) a).

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Other parts of this question

  1. 5(a)Label structures (i), (ii), and (iii) indicated on the kidney diagram in Figure 8.[3 marks]
  2. 5(b)(i)a)State whether the amount of urea passing point D in Figure 9 increases or decreases following a high-protein meal.[1 mark]
  3. 5(b)(ii)Suggest one possible medical or physiological reason why glucose might be detected at point D in Figure 9.[2 marks]
  4. 5(b)(iii)Explain why glucose detected at point D will consequently be found in the bladder.[1 mark]
  5. 5(b)(iv)Explain the effect that losing glucose in urine would have on Peter's capacity to perform daily tasks.[3 marks]
  6. 5(b)(v)Explain why Peter consumes a drink containing glucose and water after jogging around the field.[2 marks]
  7. 5(b)(vi)Name the hormone that acts to reduce blood glucose concentration.[1 mark]

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