O-LevelBiologyCoordination & Response5090/11 · Oct/Nov 2015 · Q241 Mark

The diagram shows the main muscles and bones of the arm. What happens when muscle X contracts?

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.

AThe lower arm is extended.

BThe lower arm is raised.

CThe upper arm is lowered.

DThe upper arm is raised.

✓ Correct answer

A: The lower arm is extended.

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2015 Paper 1 Variant 1, question 24.

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