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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Digestion

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Digestion

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Paper 4Theory (Extended)3 marks

Enzymes play a crucial role in digestion after physical digestion has occurred.

Description

Role of Enzymes

Enzymes are biological catalysts that speed up chemical reactions in the body, including the breakdown of food.

  1. a

    Discuss the relationship between physical digestion and enzyme action.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: Digestion

Paper 4Theory (Extended)3 marks

Description

Digestive Processes

Physical digestion involves breaking down food into smaller pieces, while chemical digestion involves enzymes breaking down food into nutrients.

  1. a

    Explain the importance of physical digestion in the digestive process.

    Aim for approximately 3 distinct marking points.

    [3]