A-LevelBiologyCell membranes and transport9700/12 · Feb/Mar 2021 · Q161 Mark

Which features must always be present for water to move between two solutions by osmosis? 1 carrier proteins 2 cell surface membrane 3 selectively permeable membrane 4 water potential gradient

A1, 2 and 3

B1, 3 and 4

C2 and 4

D3 and 4 only

✓ Correct answer

D: 3 and 4 only

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Topic: Cell membranes and transport, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Feb/Mar 2021 Paper 1 Variant 2, question 16.

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