May/June 2026 Paper 13

2026 · 40 questions · 40 parts · 40 marks

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10Proteins Amino AcidsMedium1 mark
Which statements about collagen molecules are correct? 1 Both -helices and -pleated sheets occur within the molecules. 2 Large numbers of hydrogen bonds stabilise the molecules. 3 Repeated amino acid sequences determine the tertiary structure.