Cellular respiration steps

  1. Glycolysis:
     the 6-carbon glucose is split into 2 molecules of the 3-carbon pyruvate, yielding 2 ATP and NADH.

  2. Acetyl-coA production:
    the pyruvate is broken down in the mitochondrion to form acetyl-coA, releasing carbon dioxide (CO2).

  3. Citric acid cycle:
     the acetyl-coA is broken down to release CO2 and yield more ATP, as well as NADH and FADH2.

  4. Electron Transport Chain (ETC):
     NADH and FADH2 carry high-energy electrons that are used by proton pumps to produce ATP. Oxygen is needed to accept these electrons, releasing water.
    Review:

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