A-LevelBiologyBiological molecules9700/12 · Oct/Nov 2009 · Q71 Mark

Which combination of bond types correctly shows the weak and strong bonds that hold a molecule of protein in shape?

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Ahydrogen: strong, disulfide: strong, ionic: weak

Bhydrogen: strong, disulfide: weak, ionic: strong

Chydrogen: weak, disulfide: strong, ionic: strong

Dhydrogen: weak, disulfide: strong, ionic: weak

✓ Correct answer

D: hydrogen: weak, disulfide: strong, ionic: weak

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Topic: Biological molecules, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2009 Paper 1 Variant 2, question 7.

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