Anaerobic Respiration
Science: KS3, topic 1.6.19
Anaerobic Respiration
Anaerobic respiration is respiration that occurs without oxygen. Anaerobic respiration is different from aerobic respiration, which occurs with oxygen.
Anaerobic respiration
- Anaerobic respiration is respiration that does not require oxygen.
- Aerobic respiration is a quicker and more efficient way to respire.
- Anaerobic respiration doesn’t release as much energy as aerobic respiration.
- The by-product of anaerobic respiration is lactic acid.
- In anaerobic respiration, glucose breaks down into lactic acid and energy.
Anaerobic respiration - examples
- Some microorganisms can live in low-oxygen soil.
- Prokaryotes, such as some bacteria, can survive in low-oxygen environments.
- Yeast is a fungus that can undergo fermentation.
- Fermentation is another example of anaerobic respiration.
- Fermentation is used to make bread and brew beer.
- In fermentation, glucose breaks down into carbon dioxide and ethanol.
Test yourself on Anaerobic Respiration
Select the correct statement from each pair.
Two cells break down the same amount of glucose. Cell X respires aerobically and cell Y respires anaerobically. Which cell releases more energy?
Yeast breaks down sugar into carbon dioxide and ethanol without using any oxygen. What type of respiration is this?