A-LevelBiologyNucleic acids and protein synthesis9700/12 · Oct/Nov 2011 · Q221 Mark
The diagram shows part of a DNA molecule. [Figure 22] Which row correctly identifies the structures labelled 1, 2, 3 and 4?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A1: cytosine, 2: phosphate, 3: guanine, 4: deoxyribose sugar
B1: deoxyribose sugar, 2: phosphate, 3: adenine, 4: cytosine
C1: deoxyribose sugar, 2: phosphate, 3: cytosine, 4: thymine
D1: phosphate, 2: deoxyribose sugar, 3: cytosine, 4: adenine
✓ Correct answer
C: 1: deoxyribose sugar, 2: phosphate, 3: cytosine, 4: thymine
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