A-LevelBiologyTransport in mammals9700/12 · Oct/Nov 2021 · Q281 Mark

What will happen as a result of the blood pressure in the right ventricle becoming higher than the blood pressure in the right atrium?

AThe semilunar valve in the aorta will close.

BThe semilunar valve in the pulmonary artery will close.

CThe left atrioventricular valve will close.

DThe right atrioventricular valve will close.

✓ Correct answer

D: The right atrioventricular valve will close.

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Topic: Transport in mammals, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2021 Paper 1 Variant 2, question 28.

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