A-LevelBiologyBiological molecules9700/12 · Oct/Nov 2012 · Q121 Mark

Which row shows the types of bond found at different levels of protein structures?

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APrimary: peptide ✓, hydrogen X, ionic X, hydrostatic X

BSecondary: peptide X, hydrogen ✓, ionic X, hydrostatic X

CTertiary: peptide X, hydrogen ✓, ionic ✓, hydrostatic ✓

DQuaternary: peptide ✓, hydrogen X, ionic ✓, hydrostatic ✓

✓ Correct answer

C: Tertiary: peptide X, hydrogen ✓, ionic ✓, hydrostatic ✓

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Topic: Biological molecules, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2012 Paper 1 Variant 2, question 12.

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