A-LevelBiologyBiological moleculesMay/June 2023Paper 4 Q710 Marks
Amino acids are the monomers that are used to produce proteins in organisms. Amino acids also have other, non-protein, roles in the body. Fig. 7.1 shows the structures of five amino acids with varying numbers and arrangements of carbon atoms. [Figure 7.1]
📋 Examiner Report & Trap Analysis
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...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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