A-LevelBiologyBiological molecules9700/12 · May/June 2013 · Q71 Mark

The R groups (side chains) of amino acids can be hydrophobic, hydrophilic, acidic or basic. The diagram shows four different amino acid R groups. [Figure 7.1] Which row is correct for these amino acid R groups?

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AAla Ser Asp Lys

BAla Ser Lys Asp

CAsp Lys Ser Ala

DAsp Ser Lys Ala

✓ Correct answer

A: Ala Ser Asp Lys

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Topic: Biological molecules, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2013 Paper 1 Variant 2, question 7.

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