Lesson Overview Lesson OverviewFermentation Lesson Overview 9.3 Fermentation.

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Lesson Overview 9.3 Fermentation.

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Presentation transcript:

Lesson Overview Lesson OverviewFermentation Lesson Overview 9.3 Fermentation

Lesson Overview Lesson OverviewFermentation Fermentation Fermentation - process by which energy is released from food without oxygen. - occurs in cytoplasm

Lesson Overview Lesson OverviewFermentation Fermentation 1. Glycolysis 2. cells convert NADH made by glycolysis back into NAD + 3. NAD+ used to do glycolysis again

Lesson Overview Lesson OverviewFermentation Alcoholic Fermentation Some organisms produce ethyl alcohol and carbon dioxide through fermentation. - used to produce alcoholic beverages - causes bread dough to rise.

Lesson Overview Lesson OverviewFermentation Alcoholic Fermentation Chemical equation: Pyruvic acid + NADH  Alcohol + CO 2 + NAD +

Lesson Overview Lesson OverviewFermentation Lactic Acid Fermentation Some organisms convert pyruvic acid to lactic acid during fermentation. Chemical equation: Pyruvic acid + NADH  Lactic acid + NAD +

Lesson Overview Lesson OverviewFermentation Energy and Exercise For short, quick bursts of energy, the body uses ATP already in muscles as well as ATP made by lactic acid fermentation. For exercise longer than about 90 seconds, aerobic cellular respiration is the only way to continue generating a supply of ATP. * Fermentation makes 2 net ATP. Cell respiration makes net ATP.