A-LevelBiologyGas exchangeMay/June 2015Paper 1 Q321 Mark
The diagram represents a section through the wall of a bronchus (not to scale). In a person with chronic obstructive pulmonary disease (COPD), what happens in each of the numbered structures?
A1: contracts, 2: contracts, 3: inhibited, 4: not affected
B1: contracts, 2: not affected, 3: overactive, 4: inhibited
C1: relaxes, 2: contracts, 3: inhibited, 4: paralysed
D1: relaxes, 2: not affected, 3: overactive, 4: overactive
✓ Correct Answer
The correct answer is B. 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