A-LevelBiologyTransport in mammalsOct/Nov 2021Paper 1 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
The correct answer is D: The right atrioventricular valve will close.
📋 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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