A-LevelBiologyBiological moleculesOct/Nov 2009Paper 1 Q131 Mark
Which features of collagen result in it having high tensile strength? 1 covalent bonds form between adjacent molecules 2 each three-stranded molecule is held together by hydrogen bonds 3 every third amino acid in the polypeptide is small 4 the primary structure is held together by peptide bonds
A1 and 2
B1, 2 and 3
C1, 3 and 4
D2, 3 and 4
✓ Correct Answer
The correct answer is B. 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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