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Anaerobic Respiration

Anaerobic Respiration. Chapter 10.3. Important Molecules in anaerobic respiration. CO 2 : One of two products formed in alcoholic fermentation Ethanol/ Ethyl Alcohol: One of two products formed in alcoholic fermentation Lactic Acid/ Lactate: Product of lactic acid fermentation

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Anaerobic Respiration

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  1. Anaerobic Respiration Chapter 10.3

  2. Important Molecules in anaerobic respiration • CO2: One of two products formed in alcoholic fermentation • Ethanol/ Ethyl Alcohol: One of two products formed in alcoholic fermentation • Lactic Acid/ Lactate: Product of lactic acid fermentation • Pyruvic Acid: Product of Glycolysis (2 per glucose molecule)

  3. Glycolysis • As in aerobic respiration Glycolysis is the first step. It will yield the only ATP created in anaerobic respiration

  4. Alcoholic Fermentation • glucose → 2 ethanol + 2 CO2 +2 ATP • Occurs in many bacteria and Fungi

  5. Lactic Acid Fermentation • glucose → 2 lactate + 2 ATP

  6. Lactic Acid Burn • Runners burn when muscles are loaded with lactic acid which causes a burning sensation. • The body’s natural response is pain. In an effort to stop the exercise and take in oxygen.

  7. Oxygen Debt • The amount of oxygen needed to convert that lactic acid build up back into pyruvic acid. • This is why an athlete breathes heavy after muscle cramps the body is maintaining homeostasis by converting lactic acid back to pyruvates for normal respiration to resume.

  8. Efficiency of Respiration • Aerobic Respiration is roughly 20x more efficient than anaerobic respiration. • Aerobic respiration produces: 38 ATP • Anaerobic respiration produces: 2 ATP

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