A-LevelBiologyBiological molecules9700/12 · May/June 2016 · Q61 Mark

Which biological molecules always contain the element nitrogen?

Aamino acids, cellulose, mRNA

Bamino acids, DNA, lipids

Cenzymes, mRNA, tRNA

Dmembrane proteins, starch, tRNA

✓ Correct answer

C: enzymes, mRNA, tRNA

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Topic: Biological molecules, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2016 Paper 1 Variant 2, question 6.

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