A-LevelBiologyGas exchangeOct/Nov 2018Paper 1 Q321 Mark
Haemoglobin can bind to carbon dioxide, carbon monoxide and oxygen. Which statement about the binding sites of haemoglobin is correct?
ACarbon dioxide and carbon monoxide bind to one site, oxygen binds to a different site.
BCarbon dioxide and oxygen bind to one site, carbon monoxide binds to a different site.
CCarbon monoxide and oxygen bind to one site, carbon dioxide binds to a different site.
DCarbon monoxide, oxygen and carbon dioxide all bind to different sites.
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of gas exchange within the Biologysyllabus. The examiner's mark scheme requires...
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