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    Combined Science GCSE

    Anaerobic respiration

    What Anaerobic respiration means in Combined Science GCSE, as defined for AQA.

    Definitions of Anaerobic respiration

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    Reference: AQA

    Respiration that releases less energy per glucose molecule and produces lactic acid in animal cells or ethanol and carbon dioxide in plant and yeast cells.
    AQA · Key ideas (study guide)
    Occurs without oxygen and releases less energy; in animals it produces lactic acid, and in plants and yeast it produces ethanol and carbon dioxide.
    AQA · Metabolism (study guide)
    Occurs without oxygen; in animals produces lactic acid, while in plants and yeast produces ethanol and carbon dioxide, transferring less energy.
    AQA · Aerobic and anaerobic respiration (study guide)
    Respiration that occurs without oxygen in the cytoplasm, where glucose is only partially broken down so less energy is transferred.
    AQA · Aerobic and anaerobic respiration (study guide)
    Glucose is broken down without oxygen when oxygen supply cannot keep up with demand, releasing some energy for muscle contraction.
    AQA · Aerobic and anaerobic respiration (study guide)
    Oxygen is absent, so glucose is only partially broken down and much less energy is transferred than in aerobic respiration.
    AQA · Aerobic and anaerobic respiration (study guide)

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