A-LevelBiologyGas exchangeOct/Nov 2009Paper 1 Q301 Mark
A disease damages alveoli. Which effect does this have on the gas exchange surface area and volume of the lungs?
Asurface area: decreased, volume: decreased
Bsurface area: decreased, volume: no change
Csurface area: increased, volume: increased
Dsurface area: increased, volume: no change
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of gas exchange within the Biologysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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