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resperation (ventilation (inspiration, experation), cell respiration…
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aerobic- oxygen present
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Pyruvate is broken down into carbon dioxide and water, and a large amount of ATP is produced (~34 – 36 molecules)
Aerobic respiration consists of the link reaction, citric acid cycle (or Krebs cycle) and the electron transport chain
glycolysis
Both anaerobic and aerobic respiration pathways begin with the anaerobic breakdown of glucose in the cytosol by glycolysis
Glycolysis breaks down glucose into two molecules of pyruvate, and also produces a small amount of ATP
Glycolysis is the breakdown of glucose by enzymes, releasing energy and pyruvate (oxygen not needed)
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anaerobic- no oxygen
Anaerobic respiration proceeds in the absence of oxygen and does not result in the production of any further ATP molecules
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The purpose of anaerobic respiration is to restore stocks of NAD+ – as this is needed for glycolysis. By restoring stocks of NAD+ via anaerobic pathways, the organism can continue to produce ATP via glycolysis
The conversion of pyruvate into lactic acid (animals) or ethanol and CO2 (plants / yeasts) is reversible
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