A-LevelBiologyBiological molecules9700/12 · Feb/Mar 2024 · Q121 Mark

The diagram shows the structure of part of a peptidoglycan molecule. [Figure 12.1]

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Atype of 1,4 linkage: α-1,4, number of peptide bonds: 3

Btype of 1,4 linkage: α-1,4, number of peptide bonds: 4

Ctype of 1,4 linkage: β-1,4, number of peptide bonds: 3

Dtype of 1,4 linkage: β-1,4, number of peptide bonds: 4

✓ Correct answer

D: type of 1,4 linkage: β-1,4, number of peptide bonds: 4

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Topic: Biological molecules, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Feb/Mar 2024 Paper 1 Variant 2, question 12.

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