A-LevelBiologyGas exchangeMay/June 2016Paper 1 Q341 Mark
What is correct about the affinity between haemoglobin and the gases carbon dioxide, carbon monoxide and oxygen?
Ahighest affinity: carbon monoxide, carbon dioxide, oxygen
Bhighest affinity: carbon monoxide, oxygen, carbon dioxide
Chighest affinity: oxygen, carbon dioxide, carbon monoxide
Dhighest affinity: oxygen, carbon monoxide, carbon dioxide
✓ 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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