BIOL 2051 Chapter : BIOL 2051 Lecture Outline Ch 15
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Fermentation vs. respiration: fermentation (can occur in the presence of o2) from 1 glucose molecule a net of 2 atp are produced. Partial oxidation of glucose reduction of pyruvate fermentation products: nad, respiration complete oxidation of glucose to co2 from 1 glucose molecule up to 38 atp are produced. Uses electron transport chain (etc) and atp synthesis. Fermentation: during fermentation, glycolysis occurs followed by fermentation reactions (no tca, no etc, during glycolysis, electrons from glucose are passed to 2 nad+ creating 2 nadh. In this process (glycolysis followed by fermentation reactions), net gain of 2 atp are made by substrate level. In fermentation, electrons from nadh are passed to pyruvate, regenerating nad+ so glycolysis can continue phosphorylation. Types of fermentation: homolactic fermentation: once electrons from nadh are passed to pyruvate, pyruvate is reduced to lactic acid. Lactobacillus ferments lactose sugar in milk to produce lactic acid, this gives us yogurt.