A-LevelBiologyGas exchangeFeb/Mar 2025Paper 1 Q321 Mark
The scanning electron micrograph shows the inner surface of a human trachea. [Figure 32.1] What is the identity of the part of the electron micrograph labelled T?
Aciliated epithelial cell
Bgoblet cell
Cmucus
Dsquamous epithelial cell
✓ 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...
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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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