Fermentation 1 Fermentation A Occurs without the presence

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Fermentation

Fermentation

1. Fermentation A. Occurs without the presence of oxygen. B. Pyruvic Acid can be

1. Fermentation A. Occurs without the presence of oxygen. B. Pyruvic Acid can be converted into other compounds when no oxygen is available C. Fermentation does not produce ATP but does regenerate NAD+ which keeps glycolysis going D. 2 common pathways 1. Produce Lactic Acid 2. Produce Ethyl Alcohol

2. Lactic Acid Fermentation. Anaerobic process of glucose breakdown that produces lactic acid A.

2. Lactic Acid Fermentation. Anaerobic process of glucose breakdown that produces lactic acid A. Hydrogen atoms from NADH and H+ are added to pyruvic acid B. NADH is oxidized to NAD+, needed for glycolysis, when it is reduced to NADH C. This NAD+ regeneration keeps glycolysis going D. An enzyme converts pyruvic acid into a 3 -C molecule called lactic acid E. During fermentation, NADH loses electrons and hydrogen atoms from NADH and H+ are added to pyruvic acid, resulting in NAD+ and lactic acid

3. Products of lactic acid fermentation A. During the production of yogurt, cheese, and

3. Products of lactic acid fermentation A. During the production of yogurt, cheese, and also produced in your muscles

4. Alcoholic Fermentation A. An enzyme converts pyruvic acid into ethyl alcohol in two

4. Alcoholic Fermentation A. An enzyme converts pyruvic acid into ethyl alcohol in two steps: 1. A CO 2 molecule is removed from the pyruvic acid, leaving a 2 -C compound 2. During fermentation, NADH loses electrons and hydrogen atoms from NADH and H+ are added to pyruvic acid, resulting in NAD+ and ethyl alcohol and CO 2 a. the regenerated NAD+ is used in glycolysis

5. Products of alcoholic fermentation A. Process results in the making of beer, wine,

5. Products of alcoholic fermentation A. Process results in the making of beer, wine, and bread

6. Energy Yield A. Some unicellular organisms can live off of these limited energy

6. Energy Yield A. Some unicellular organisms can live off of these limited energy yields B. Larger multicellular organisms must use aerobic respiration

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