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Learning objective

Explain how anaerobic respiration in yeast contributes to the production of ethanol used in biofuels.

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE BiologyBiotechnology and genetic modificationCore content

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Quick explanation

Explain how anaerobic respiration in yeast contributes to the production of ethanol used in biofuels

  • This point belongs to Biotechnology, especially Biotechnology outcomes.
  • You need to be able to explain how anaerobic respiration in yeast contributes to the production of ethanol used in biofuels.
  • The key ideas to know are Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Describe

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Paper 3 structured question: Biotechnology

Paper 3Theory (Core)3 marks

Description

Anaerobic Respiration in Yeast

Yeast cells break down glucose without oxygen to produce ethanol and carbon dioxide. This process releases energy for the yeast and produces ethanol that can be used as a biofuel.

  1. a

    Describe how anaerobic respiration in yeast leads to the production of ethanol used in biofuels.

    Aim for approximately 3 distinct marking points.

    [3]
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