Quelpr
3 marksRespiration and Air Pollution

CSEC Integrated Science · 2005 · Paper 2 · Question 1(a)(v)

Figure 1 illustrates two models (A and B) representing the human respiratory system.

Identify whether inhalation or exhalation is demonstrated by the bell jar model in Figure 1, giving one reason for your answer.

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Other parts of this question

  1. 1(a)(i)State which model, A or B, better represents the human respiratory system.[1 mark]
  2. 1(a)(ii)Provide one reason for your answer in (a)(i).[2 marks]
  3. 1(a)(iii)a)State which part of the human respiratory system is represented by the balloons in Model B.[1 mark]
  4. 1(a)(iii)b)State which part of the human respiratory system is represented by the rubber in Model B.[1 mark]
  5. 1(a)(iv)Explain whether the volume of air inside the bell jar changes when the thumb in Model B is removed and the rubber flattens.[2 marks]
  6. 1(b)(i)Determine the percentage of the population at location A with severe bronchitis using Figure 2.[1 mark]
  7. 1(b)(ii)Identify which location (A, B, C, or D) is least affected by severe bronchitis.[1 mark]
  8. 1(b)(iii)Suggest which location (A, B, C, or D) is most likely situated near a large cement factory.[1 mark]
  9. 1(b)(iv)Give two reasons supporting your suggestion in (b)(iii).[2 marks]

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