A-LevelBiologyInfectious diseases9700/12 · Oct/Nov 2024 · Q401 Mark

Peptidoglycan is stained purple by the chemical crystal violet. Which cells would stain purple in the presence of crystal violet?

Apalisade mesophyll cells

BVibrio cholerae cells

CPlasmodium falciparum cells

Dendothelial cells

✓ Correct answer

B: Vibrio cholerae cells

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Topic: Infectious diseases, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2024 Paper 1 Variant 2, question 40.

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