A-LevelBiologyTransport in mammalsMay/June 2019Paper 1 Q281 Mark

At a certain point in a cardiac cycle, the pressure in the right ventricle is lower than that in the right atrium and lower than that in the pulmonary artery. Which row is correct?

Q: What topic does this question test?

This question tests Transport in mammals in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Aatrioventricular valve: closed, semilunar valve: closed

Batrioventricular valve: closed, semilunar valve: open

Catrioventricular valve: open, semilunar valve: closed

Datrioventricular valve: open, semilunar valve: open

✓ Correct Answer

The correct answer is C: atrioventricular valve: open, semilunar valve: closed

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Biology Question

Topic

This multiple-choice question tests Transport in mammals in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology May/June 2019 examination, Paper 1 Variant 2.

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