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Learning objective

Discuss how enzymes are specific due to the complementary shape and fit between the active site and the substrate.

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Cambridge IGCSE Combined ScienceEnzymesSupplement content

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Quick explanation

Discuss how enzymes are specific due to the complementary shape and fit between the active site and the substrate

  • This point belongs to Enzymes, especially Enzymes outcomes.
  • You need to be able to discuss how enzymes are specific due to the complementary shape and fit between the active site and the substrate.
  • The key ideas to know are Describe and Explain.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeExplain

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Paper 4 structured question: Enzymes

Paper 4Theory (Extended)3 marks

Description

Enzyme Specificity

Enzymes are proteins that catalyze biochemical reactions. Their active sites are uniquely shaped to fit specific substrates, allowing them to facilitate reactions efficiently.

  1. a

    Explain how the structure of an enzyme relates to its function.

    Aim for approximately 3 distinct marking points.

    [3]
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