A-LevelBiologyNucleic acids and protein synthesis9700/12 · Feb/Mar 2024 · Q231 Mark
Which statements are correct for all nucleotides? 1 The nitrogen-containing base is always attached to carbon atom 1 of the pentose. 2 The phosphate group is always attached to carbon atom 5 of the pentose. 3 A condensation reaction occurs to join the nitrogen-containing base to the pentose. 4 Nucleotides are linked together by condensation reactions between phosphate groups.
A1, 2 and 3
B1 and 2 only
C1, 3 and 4
D2, 3 and 4
✓ Correct answer
A: 1, 2 and 3
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