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A-LevelBiologyControl and coordinationMay/June 2022Paper 4 Q89 Marks

The role of sensory receptor cells in mammals is to detect stimuli and generate action potentials in sensory neurones. Human taste buds on the tongue contain chemoreceptor cells. Different chemoreceptor cells respond to different chemical stimuli. [Figure 8.1] is a diagram of chemoreceptor cells in a taste bud.

Q: What topic does this question test?

This question tests Control and coordination in A-Level Biology (syllabus code 9700). It is worth 9 marks.

📋 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...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Biology Question

Topic

This structured question tests Control and coordination in A-Level Biology (syllabus code 9700). It is worth 9 marks.

Source

This question appeared in the Cambridge A-Level Biology May/June 2022 examination, Paper 4 Variant 2.

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