A-LevelBiologyGas exchange9700/12 · Feb/Mar 2023 · Q341 Mark
Scientists have shown that the oxygen dissociation curves for haemoglobin of smaller mammals are to the right of those of larger mammals. What does this suggest about the haemoglobin of smaller mammals?
AAt low partial pressures of oxygen, it binds to oxygen more strongly than the haemoglobin of larger mammals.
BIt saturates with oxygen at lower partial pressures of oxygen than the haemoglobin of larger mammals.
CIt releases oxygen more easily than the haemoglobin of larger mammals.
DWhen the partial pressure of oxygen is high, it carries more oxygen than the haemoglobin of larger mammals.
✓ Correct answer
C: It releases oxygen more easily than the haemoglobin of larger mammals.
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