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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Enzymes

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Enzymes

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Paper 4Theory (Extended)4 marks

Consider the effect of temperature on enzyme activity.

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]

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Paper 4 structured question: Enzymes

Paper 4Theory (Extended)2 marks

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]