A-LevelBiologyBiological molecules9700/12 · May/June 2021 · Q111 Mark

Which molecule contains the smallest number of hydrogen atoms?

Aα-glucose

Bglycine, an amino acid in which the R group is H

Cglycerol

Dsaturated fatty acid containing eight carbon atoms

✓ Correct answer

B: glycine, an amino acid in which the R group is H

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Topic: Biological molecules, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2021 Paper 1 Variant 2, question 11.

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