O-LevelBiologyCoordination & Response5090/11 · Oct/Nov 2022 · Q241 Mark

The diagram shows the nerve pathway in a reflex action when a person accidentally touches something hot. Which row correctly identifies a sensory neurone, a relay neurone and a motor neurone?

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A1: motor neurone, 2: relay neurone, 3: sensory neurone

B1: sensory neurone, 2: relay neurone, 3: motor neurone

C1: relay neurone, 2: motor neurone, 3: sensory neurone

D1: motor neurone, 2: sensory neurone, 3: relay neurone

✓ Correct answer

A: 1: motor neurone, 2: relay neurone, 3: sensory neurone

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2022 Paper 1 Variant 1, question 24.

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