A-LevelBiologyCell membranes and transport9700/12 · Oct/Nov 2018 · Q41 Mark

The removal of a plant cell wall by enzyme digestion leaves an intact membrane-bound structure called a protoplast. Which statement explains why protoplasts are easily damaged?

AMitochondria stop producing ATP to maintain membrane integrity.

BNet movement of water is no longer limited by turgor.

CSecretory vesicles are unable to fuse with the cell surface membrane.

DThe shape of the cell structures is changed by the loss of cell shape.

✓ Correct answer

B: Net movement of water is no longer limited by turgor.

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Topic: Cell membranes and transport, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2018 Paper 1 Variant 2, question 4.

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