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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    17-Dec-2015

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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.