A-LevelBiologyCell membranes and transport9700/12 · May/June 2014 · Q141 Mark
The diagram shows the fluid mosaic model of a section of a cell surface membrane. [Figure 14.1] What is the role of each of the components labelled 1 to 3?
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A1: antigen, 2: chemical receptor, 3: allow lipid soluble molecules to pass through
B1: barrier to polar molecules, 2: stabilise the membrane, 3: antigen
C1: chemical receptor, 2: allow lipid soluble molecules to pass through, 3: regulate the fluidity of the membrane
D1: stabilise the membrane, 2: control the fluidity of the membrane, 3: barrier to polar molecules
✓ Correct answer
A: 1: antigen, 2: chemical receptor, 3: allow lipid soluble molecules to pass through
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