A-LevelBiologyCell membranes and transportOct/Nov 2011Paper 1 Q161 Mark

The cell surface membranes of plants adapted to cold conditions change as the weather gets colder, allowing the plants to carry out exocytosis. Which change occurs?

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.

Adecrease in the ratio of proteins to saturated phospholipids

Bdecrease in the ratio of unsaturated phospholipids to saturated phospholipids

Can increase in the ratio of proteins to unsaturated phospholipids

Dan increase in the ratio of unsaturated phospholipids to saturated phospholipids

✓ Correct Answer

The correct answer is D: an increase in the ratio of unsaturated phospholipids to saturated phospholipids

📋 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 Oct/Nov 2011 examination, Paper 1 Variant 2.

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