A-LevelBiologyTransport in mammalsMay/June 2017Paper 1 Q281 Mark
When they remain at high altitudes the red blood cell count of humans increases. Why does this occur? 1 to increase the Bohr effect 2 to increase the diffusion gradient for oxygen in the lungs 3 to maintain transport of oxygen
A1, 2 and 3
B1 and 2 only
C2 and 3 only
D3 only
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of transport in mammals 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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