A-LevelBiologyTransport in mammalsOct/Nov 2020Paper 1 Q351 Mark
Which row is correct about the affinity between haemoglobin and the gases carbon dioxide, carbon monoxide and oxygen? [Figure 35.1]
Ahighest affinity: carbon monoxide, lowest affinity: oxygen
Bhighest affinity: carbon monoxide, lowest affinity: carbon dioxide
Chighest affinity: oxygen, lowest affinity: carbon monoxide
Dhighest affinity: oxygen, lowest affinity: carbon dioxide
✓ Correct Answer
The correct answer is B. 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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