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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Enzymes

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4

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2

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Topic

Enzymes

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Paper 4Theory (Extended)2 marks

Enzymes play a crucial role in biological processes.

Description

Enzyme Action

Enzymes are proteins that catalyze biochemical reactions by forming an enzyme-substrate complex at their active sites.

  1. a

    Explain the significance of the active site in enzyme function.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 4 structured question: Enzymes

Paper 4Theory (Extended)4 marks

Description

Temperature and Enzyme Activity

Enzymes have optimal temperature ranges for activity. Extreme temperatures can lead to denaturation.

  1. a

    Discuss how temperature affects enzyme activity and the implications of denaturation.

    Aim for approximately 4 distinct marking points.

    [4]