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A-LevelBiologyBiological molecules9700/12 · May/June 2011 · Q81 Mark

At which levels of protein structure do ionic bonds occur? 1 secondary 2 tertiary 3 quaternary

A1 and 2 only
B1 and 3 only
C2 and 3 only
D1, 2 and 3

✓ Correct answer

C: 2 and 3 only

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About this question

Topic
Biological molecules, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, May/June 2011 Paper 1 Variant 2, question 8.

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