A-LevelBiologyTransport in mammalsMay/June 2025Paper 1 Q331 Mark
Which statements about a mammalian heart are correct? 1 The right atrium and right ventricle contain deoxygenated blood going to the lungs. 2 The left atrium and left ventricle contain oxygenated blood going to the pulmonary circulation. 3 The left ventricle has a thicker wall than the right ventricle and delivers blood at higher pressure. 4 The pressure of blood in the aorta is less than that in the pulmonary artery.
A1, 3 and 4
B1 and 3 only
C2, 3 and 4
D2 and 4 only
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of transport in mammals within the Biologysyllabus. The examiner's mark scheme requires...
📋 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...
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