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8 marksThe Circulatory System of Mammals

CAPE Biology Unit 2 · May/June 2024 · Paper 2 · Question 3(c)(iii)

Figure 6 shows how exercise improves cardiovascular health in the human body.

Discuss how the following improvements in cardiovascular health shown in Figure 6 impact cardiac output. You MUST present your response in complete paragraphs. Vasodilation. Increase in mitochondria.

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Other parts of this question

  1. 3(a)(i)Define the term 'immune response'.[2 marks]
  2. 3(a)(ii)Suggest TWO reasons why memory cells facilitate long-term immunity.[2 marks]
  3. 3(a)(iii)Using an annotated diagram ONLY, describe the entire sequence of events involved in either a humoral immune response OR a cell-mediated immune response. Your…[6 marks]
  4. 3(b)(i)On the grid provided on page 19, plot the data provided in Table 4 as a bar graph with weight (kg) on the x-axis.[5 marks]
  5. 3(b)(ii)State TWO key deductions based on the results of this study.[2 marks]
  6. 3(b)(iii)State ONE link between diabetes and diet.[1 mark]
  7. 3(c)(i)Complete Table 5 by calculating the missing values for Individual A and Individual B.[2 marks]
  8. 3(c)(ii)Identify whether EACH individual is elite trained (performing at least one hour of daily intense aerobic activity) or untrained (engages in moderate aerobic…[2 marks]

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