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2 marksEnzymes

CAPE Biology Unit 1 · 2011 · Paper 2 · Question 4(b)(i)

Outline FOUR key stages in the mode of action of enzymes in catalysing chemical reactions.

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  1. 4(a)(i)With reference to the levels of structural organization and types of bonds, describe the structure of the protein, collagen. (No diagrams are required.)[6 marks]
  2. 4(a)(ii)Explain ONE functional property of collagen which makes it suitable as a major component of tendons and ligaments.[2 marks]
  3. 4(b)(ii)Enzyme activity may be altered by poisons and drugs. Discuss, using a specific example, how poisons such as insecticides may affect enzyme activity.[5 marks]

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