A-LevelBiologyTransport in mammalsMay/June 2016Paper 1 Q291 Mark
The graph shows changes in percentage saturation of haemoglobin with oxygen in the blood of a human and of another animal. The partial pressure of carbon dioxide remains constant at 1.0kPa and the temperature is constant at 25°C. [Figure 29.1] Which conclusion is supported by the graph?
AAt 25 °C the affinity of haemoglobin for oxygen increases more in humans than in the animal.
BHaemoglobin in the animal carries less oxygen than haemoglobin in the human.
COxygen is more easily released from haemoglobin in animal muscle than in human muscle.
DThe Bohr effect in the haemoglobin of the animal is greater than in human haemoglobin.
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The correct answer is C. This question tests the candidate's understanding of transport in mammals within the Biologysyllabus. The examiner's mark scheme requires...
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