Aerobic and Anaerobic

Biology: Edexcel IGCSE, topic 3.1.2

Aerobic and Anaerobic Respiration

There are key differences between aerobic and anaerobic respiration:

ATP

ATP

  • Aerobic respiration produces much more adenosine triphosphate (ATP, which is a unit of energy) than anaerobic respiration.
Products

Products

  • Aerobic respiration produces carbon dioxide and water.
  • Anaerobic respiration produces carbon dioxide and ethanol (plants and yeast) or lactic acid (animals).
Oxygen

Oxygen

  • Oxygen is needed for aerobic but not anaerobic respiration.
Glucose

Glucose

  • Aerobic respiration fully breaks down glucose.
  • Anaerobic respiration only partially breaks down glucose.

Test yourself on Aerobic and Anaerobic

  • Which type of respiration can produce lactic acid?

  • How much energy do aerobic and anaerobic respiration produce?

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