A-LevelBiologyNucleic acids and protein synthesisFeb/Mar 2022Paper 1 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]
A1, 2, 3 and 4
B1, 2 and 3 only
C1 and 2 only
D3 and 4 only
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The correct answer is B. This question tests the candidate's understanding of nucleic acids and protein synthesis within the Biologysyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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