A-LevelBiologyCell membranes and transport9700/12 · Oct/Nov 2021 · Q161 Mark

Liver cells contain vesicles that have proteins in their membranes which are specific for the transport of glucose. When these cells need to take up glucose, the vesicles fuse with the cell surface membrane. How does the uptake of glucose occur?

Aexocytosis

Bdiffusion

Cendocytosis

Dfacilitated diffusion

✓ Correct answer

D: facilitated diffusion

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

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