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A-LevelBiologyGas exchange9700/12 · May/June 2016 · Q341 Mark

What is correct about the affinity between haemoglobin and the gases carbon dioxide, carbon monoxide and oxygen?

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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

B: highest affinity: carbon monoxide, oxygen, carbon dioxide

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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 2016 Paper 1 Variant 2, question 34.

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