CSEC Biology · January 2010 · Paper 2 · Question 2(b)(i)
Name the process by which gases move in the directions shown by the arrows.
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Practise this questionOther parts of this question
- 2(a)(i)Name the structures labelled P, Q, R and S in Figure 3.[4 marks]
- 2(a)(ii)Identify the gases indicated by the arrows, A and B, in Figure 3.[2 marks]
- 2(b)(ii)Identify ONE feature illustrated in the diagram which shows that the alveolus is suitable for gaseous exchange.[1 mark]
- 2(c)What is the role of breathing in the movement of the gases illustrated in Figure 3?[2 marks]
- 2(d)A person who is exercising vigorously breathes more deeply and rapidly than someone who is resting. Give TWO reasons why this is necessary.[2 marks]
- 2(e)Explain how cigarette smoking can reduce the efficiency of the lungs.[3 marks]
More practice: the rest of this paper · more Transport Across Membranes questions · all CSEC Biology past papers