A-LevelBiologyGas exchangeFeb/Mar 2023Paper 1 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
The correct answer is C. 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...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep