Chapter 9 (continued) Fermentation. glucose 2 ATP 2 NADH 2 pyruvate 2 ATP 8 NADH 2FADH 2 O 2 32-34 ATP water glycolysis citric Acid cycle oxidative phosphorylation.

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Slide 1 Chapter 9 (continued) Fermentation Slide 2 glucose 2 ATP 2 NADH 2 pyruvate 2 ATP 8 NADH 2FADH 2 O 2 32-34 ATP water glycolysis citric Acid cycle oxidative phosphorylation Slide 3 glucose 2 ATP 2 NADH 2 pyruvate 2 ATP 8 NADH 2FADH 2 O 2 32-34 ATP water glycolysis citric Acid cycle oxidative phosphorylation What if theres no oxygen? Slide 4 glucose 2 ATP 2 NADH 2 pyruvate 2 ATP 8 NADH 2FADH 2 O 2 32-34 ATP water glycolysis citric Acid cycle oxidative phosphorylation Then theres nowhere for the ETC to dump its electrons. Slide 5 glucose 2 ATP 2 NADH 2 pyruvate 2 ATP 8 NADH 2FADH 2 O 2 32-34 ATP water glycolysis citric Acid cycle oxidative phosphorylation So theres nowhere for NADH and FADH 2 to unload. Slide 6 glucose 2 ATP 2 NADH 2 pyruvate 2 ATP 8 NADH 2FADH 2 O 2 32-34 ATP water glycolysis citric Acid cycle oxidative phosphorylation So the citric acid cycle stops. Slide 7 glucose 2 ATP 2 NADH 2 pyruvate glycolysis But wait! It gets even worse! Slide 8 glucose 2 ATP 2 NADH 2 pyruvate 2 NAD + glycolysis You cant make NADH without a steady supply of NAD+. Slide 9 glucose 2 ATP 2 NADH 2 pyruvate 2 NAD + glycolysis NADH has nowhere to dump its electrons. Slide 10 glucose 2 ATP 2 NADH 2 pyruvate 2 NAD + glycolysis So we stop making more. Slide 11 glucose 2 ATP 2 NADH 2 pyruvate 2 NAD + glycolysis So even glycolysis stops. Slide 12 glucose 2 ATP 2 NADH 2 pyruvate 2 NAD + glycolysis Is there no hope? Slide 13 glucose 2 ATP 2 NADH 2 pyruvate 2 NAD + glycolysis There is! Theres something else we can do. Slide 14 glucose 2 ATP 2 NADH 2 pyruvate 2 NAD + glycolysis We can use the NADH Slide 15 glucose 2 ATP 2 NADH 2 pyruvate 2 NAD + glycolysis 2 ethanol or 2 lactate We can use the NADH to turn pyruvate into ethanol or lactate. Slide 16 glucose 2 ATP 2 NADH 2 pyruvate 2 NAD + glycolysis 2 ethanol or 2 lactate That way, at least we get to keep the 2 ATP. Slide 17 glucose 2 ATP 2 NADH 2 pyruvate 2 NAD + 2 ATP 8 NADH 2FADH 2 O 2 32-34 ATP water glycolysis citric acid cycle oxidative phosphorylation Its not much, but its better than nothing. 2 ethanol or 2 lactate.

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