A-LevelBiologyTransport in mammalsOct/Nov 2017Paper 1 Q321 Mark

The graph shows changes in the volume of the ventricles during the cardiac cycle. [Figure 32.1 - graph showing changes in ventricular volume during cardiac cycle] Which valves open and close at P and R?

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 at P: closes, semilunar valve at R: closes

Batrioventricular valve at P: closes, semilunar valve at R: opens

Catrioventricular valve at P: opens, semilunar valve at R: closes

Datrioventricular valve at P: opens, semilunar valve at R: opens

✓ Correct Answer

The correct answer is A: atrioventricular valve at P: closes, semilunar valve at R: closes

📋 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 Oct/Nov 2017 examination, Paper 1 Variant 2.

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