A-LevelBiologyCell membranes and transportMay/June 2011Paper 1 Q31 Mark

Visking tubing is an artificial partially permeable membrane used to demonstrate diffusion. Glucose molecules can pass through the pores in the membrane which are approximately 2.4 nm in diameter. Which of the following could pass through the pores? 1 bacteria 2 haemoglobin 3 ribosomes 4 glycogen

Q: What is the correct answer to this A-Level Biology question?

The correct answer is D: none of these.

Q: What topic does this question test?

This question tests Cell membranes and transport in A-Level Biology (syllabus code 9700). It is worth 1 mark.

A2 only

B1 and 3 only

C2 and 4 only

Dnone of these

✓ Correct Answer

The correct answer is D: none of these

📋 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 Cell membranes and transport in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology May/June 2011 examination, Paper 1 Variant 2.

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