O-LevelBiologyCoordination & Response5090/11 · May/June 2020 · Q241 Mark

Which statements about the elbow joint are correct? 1 When the biceps muscle contracts, the elbow is bent. 2 When the triceps muscle relaxes, the elbow is straightened. 3 Skeletal muscles work in antagonistic pairs.

A1, 2 and 3

B1 and 2 only

C1 and 3 only

D2 and 3 only

✓ Correct answer

C: 1 and 3 only

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2020 Paper 1 Variant 1, question 24.

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