A-LevelBiologyGas exchangeOct/Nov 2014Paper 1 Q321 Mark
Which are effects on the body of carbon monoxide in tobacco smoke? 1 It reduces the amount of haemoglobin available to transport oxygen. 2 It reduces the rate of diffusion of oxygen from the alveoli into the blood. 3 It inhibits the release of oxygen from haemoglobin.
A1, 2 and 3
B2 and 3 only
C1 only
D3 only
✓ 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