A-LevelBiologyGas exchangeMay/June 2016Paper 1 Q331 Mark
Which components of the human gas exchange system help to reduce the effects of carcinogens in tar?
Acilia and goblet cells only
Bcilia and mucous glands only
Cmucous glands and goblet cells only
Dmucous glands, goblet cells and cilia
✓ Correct Answer
The correct answer is D. 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...
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