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A-LevelBiologyGas exchange9700/12 · May/June 2014 · Q331 Mark

Which could directly reduce the surface area available for gas exchange in human lungs? 1 emphysema 2 lung cancer 3 smoking

A1, 2 and 3
B1 and 2 only
C1 and 3 only
D2 and 3 only

✓ Correct answer

B: 1 and 2 only

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About this question

Topic
Gas exchange, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, May/June 2014 Paper 1 Variant 2, question 33.

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