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Edexcel IGCSEBiologyGeneral Applications2 Marks

Explain why enzymes are described as specific.

  1. Explain why enzymes are described as specific.[2]

Mark scheme

Marking points from the official mark scheme. The mark or mark type is shown in brackets.

  1. M1 for active site has a unique/complementary shape;
  2. A1 for to fit only one specific substrate / lock and key mechanism; (2 marks)

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Topic
General Applications, Edexcel IGCSE Biology. Structured question, 2 marks.

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