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Cambridge IGCSE Biology practice

Paper 4 structured question: Anaerobic respiration

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Anaerobic respiration

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Paper 4Theory (Extended)2 marks

Anaerobic respiration in yeast

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Anaerobic Respiration in Yeast

Yeast cells convert glucose into ethanol and carbon dioxide when oxygen is not available. This process releases energy used by the yeast cells.

  1. a

    Identify the two products formed during anaerobic respiration in yeast.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 4 structured question: Anaerobic respiration

Paper 4Theory (Extended)2 marks

Description

Anaerobic Respiration in Yeast

Yeast cells can respire anaerobically by breaking down glucose to produce ethanol and carbon dioxide. This process is important in baking and brewing industries.

  1. a

    State the balanced chemical equation for anaerobic respiration in yeast.

    Aim for approximately 2 distinct marking points.

    [2]