Explain6 marksChallenge
In tendons, collagen fibres are aligned parallel to the direction of tensile force. Explain how the molecular structure and arrangement of collagen fibres make it suitable for this structural role.
CAIE A Level Biology 9700 · Biological molecules
Biological molecules: explain question
How this question is marked
6 marks, so the mark scheme is looking for about 6 separate creditworthy points. Making the same point twice in different words earns it once.
Explain means: Give the reasons or the mechanism: why or how something happens. Link each point to the next with because, so or which means. A list of facts with no links usually loses the reasoning marks.
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