A-LevelBiologyCell membranes and transportFeb/Mar 2017Paper 1 Q191 Mark

The diagram shows two pathways, X and Y, through which molecules can diffuse across a cell surface membrane. Which row correctly shows possible pathways for lipids, water and glucose? [Figure 19.1]

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

The correct answer is A: X only X and Y Y only.

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.

AX only X and Y Y only

BX only Y only Y only

CX and Y X only X and Y

DX and Y X and Y X only

✓ Correct Answer

The correct answer is A: X only X and Y Y only

📋 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 Feb/Mar 2017 examination, Paper 1 Variant 2.

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