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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Enzymes

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4

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Enzymes

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Paper 4Theory (Extended)4 marks

Enzymes are essential for metabolic processes in living organisms.

Description

Enzyme Function

Enzymes lower the activation energy required for reactions, increasing the rate of biochemical processes.

  1. a

    Discuss the importance of enzyme specificity in metabolic pathways.

    Aim for approximately 4 distinct marking points.

    [4]

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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]