A-LevelBiologyBiological moleculesFeb/Mar 2018Paper 1 Q81 Mark
A student wrote these statements about polysaccharides. 1 Amylose is formed from condensation reactions between β-glucose monomers. 2 Branches in amylopectin molecules form between carbon atoms 1 and 4 on α-glucose molecules. 3 In unbranched β-glucose chains, each monomer is rotated 180° relative to its adjacent monomer. Which of these statements are correct?
A1 and 2
B1 only
C2 and 3
D3 only
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of biological molecules within the Biologysyllabus. The examiner's mark scheme requires...
📋 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...
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