CAPE Biology Unit 1 · 2015 · Paper 1 · Question Q11
Which of the following correctly describes the importance of cholesterol in a cell membrane?
- (A)It interacts with fatty acid tails to exclude water.
- (B)It forms channels in the membrane facilitating entry and exit of polar molecules.
- (C)It has branching carbohydrate chains which act as identity markers.
- (D)It enhances the flexibility and mechanical stability of the membrane.
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