A-LevelBiologyTransport in mammalsOct/Nov 2012Paper 1 Q311 Mark

Normal venous pressure in the feet is 3.3 kPa. When a person stands very still venous blood pressure in the feet rises to 5.0 kPa. What causes the high pressure?

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.

AMuscles in the walls of the veins contract, reducing the diameter of the veins.

BSkeletal muscles in the legs are not squeezing blood upward in the veins.

CSystolic blood pressure increases.

DThe valves in the veins of the legs allow blood to flow to the feet.

✓ Correct Answer

The correct answer is B: Skeletal muscles in the legs are not squeezing blood upward in the veins.

📋 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 2012 examination, Paper 1 Variant 2.

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