Anaerobic Energy PathwayAnaerobic Energy Pathway

Read 7.6 (pages 153-155)Read 7.6 (pages 153-155)

Fermentation Fermentation

Oxygen is not the final e- acceptorOxygen is not the final e- acceptorBacteria, protistansBacteria, protistans– Yogurt, yeastYogurt, yeastNot enough energy to sustain a multicelled Not enough energy to sustain a multicelled organismorganism

OverviewOverviewGlycolysisGlycolysis– 2 NADH2 NADH– 2 ATP2 ATP– Glucose not completely broken down to CO2 Glucose not completely broken down to CO2

and H2Oand H2OFermentation’s final steps Fermentation’s final steps – Regenerate NAD+Regenerate NAD+

Lactate FermentationLactate FermentationPyruvate Pyruvate Lactic Acid Lactic Acid– Accept H+ and e- from NADHAccept H+ and e- from NADH

Regenerates NAD+Regenerates NAD+Converts Pyruvate to Lactate (Lactic Acid)Converts Pyruvate to Lactate (Lactic Acid)

DIAGRAMDIAGRAM

Alcoholic FermentationAlcoholic FermentationPyruvate Pyruvate ethanol ethanolYeastYeast– BreadBread– Wine and BeerWine and Beer

DiagramDiagram

TestTestYou are an electron in a water You are an electron in a water molecule that has just entered a molecule that has just entered a plant cell. Explain to me, what plant cell. Explain to me, what happens to you, where you go, what happens to you, where you go, what you produce, what forks in the road you produce, what forks in the road you could take, and what you do you could take, and what you do along the way.along the way.