A-LevelBiologyBiological moleculesMay/June 2017Paper 1 Q51 Mark
Boiling the bones and teeth from dead animals can be used to produce a type of glue. The glue is formed from the collagen fibres present in bones and teeth. Which statement describes the changes to collagen that occur when the glue is produced?
AThe fibres of collagen become more coiled.
BThe fibres of collagen become more flexible.
CThe helices of collagen molecules unwind.
DThe molecules of collagen dissolve in water.
✓ Correct Answer
The correct answer is C. 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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