A-LevelBiologyBiological moleculesOct/Nov 2025Paper 1 Q71 Mark
The diagram shows some relationships between features of carbohydrates. [Venn diagram showing α-glucose, 1,4 bonds, highly branched and regions 1, 2, 3] Which row correctly matches the carbohydrate with some of its features?
A1: amylopectin, 2: glycogen, 3: amylose
B1: amylose, 2: amylopectin, 3: cellulose
C1: cellulose, 2: glycogen, 3: sucrose
D1: glycogen, 2: amylose, 3: amylopectin
✓ Correct Answer
The correct answer is B: 1: amylose, 2: amylopectin, 3: cellulose
📋 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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