Anaerobic cell respiration: Puryvate is converted into lactate or alcohol <- no further ATP yield
- Lactic fermentation = No oxygen is available, Krebs cycle is stopped and the electron transport chain stops. Too much pyruvate is built up and we need a way to get rid of it. Pyruvate is therefore transferred into a waste product - lactate - that can be removed from the cell. No ATP is produced
- Alcohol fermentation = No oxygen is available. Pyruvate is transferred into ethanol(alcohol) and carbon dioxide is created as a bi-product. This is how an one-celled organism can overcome oxygen deficiency.
Aerobic cell respiration:
Pyruvate is absorbed and broken down in the mitochondrion into carbon dioxide and water (!) <- large ATP yield
