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A-LevelBiologyNucleic acids and protein synthesis9700/12 · Feb/Mar 2022 · Q231 Mark

The diagram represents a nucleotide containing adenine. Which statements about this nucleotide are correct? 1 The carbohydrate is a pentose. 2 The base contains nitrogen. 3 Base pairing occurs with uracil. 4 Adenine is a pyrimidine. [Figure 23.1]

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A1, 2, 3 and 4
B1, 2 and 3 only
C1 and 2 only
D3 and 4 only

✓ Correct answer

B: 1, 2 and 3 only

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Topic
Nucleic acids and protein synthesis, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, Feb/Mar 2022 Paper 1 Variant 2, question 23.

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