A-LevelBiologyCell membranes and transport9700/12 · May/June 2013 · Q161 Mark

Which of the following can increase the fluidity of the cell surface membrane? 1 single bonds between carbon atoms in the fatty acid chains 2 cholesterol 3 fatty acids having longer chains

A1, 2 and 3

B1 and 3 only

C2 and 3 only

D2 only

✓ Correct answer

D: 2 only

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Topic: Cell membranes and transport, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2013 Paper 1 Variant 2, question 16.

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