O-LevelBiologyCoordination & Response5090/12 · May/June 2014 · Q241 Mark

The diagram shows parts of the human forelimb. [Figure 24 - Diagram showing the human forelimb with muscles and a nerve labelled X] What will happen if a nerve impulse stimulates X?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Abiceps, arm bends

Bbiceps, arm straightens

Ctriceps, arm bends

Dtriceps, arm straightens

✓ Correct answer

A: biceps, arm bends

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2014 Paper 1 Variant 2, question 24.

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