bring electrons harvested from glycolysis pyruvate oxidation and CAC Electrons

Bring electrons harvested from glycolysis pyruvate

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bring electrons harvested from glycolysis, pyruvate oxidation, and CAC - Electrons passed down ETC, energy released is used to maintain proton gradient
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- Proton gradient drives ATP synthase via ATP synthase - Electrons are unloaded onto the oxygen, the final electron acceptor - Products: ~32 to 34 ATP and H 2 O (a waste product) Aerobic Respiration yields 36 ATP; oxygen is required C 6 H 12 O 6 +6O 2 → H 2 O+6CO 2 1. Glycolysis; breaks glucose (all carbons still there); happens in cytosol; 2 ATP to break structure; intermediate step is pyruvate (2 ATP produced); releases 2 CO 2 to become Acytl CoA that goes into... 2. Krebs Cycle; happens in mitochondria; 2 Acytl CoA used; CO 2 released; 3 NADH produced from one cycle; FADH 2 produced; 2 ATP produced 3. Electron Transport Chain; 32 ATP produced 6.6 - Cellular respiration is not always aerobic; certain organisms can survive in the absence of oxygen (anaerobic) - What produces ATP w/o oxygen? Fermentation requires pyruvate from glycolysis; allows for the recycling of NADH to NAD+ - Fermentation uses pyruvate to oxidize NADH (electron carrier), forming NAD+ - Pyruvate is then converted into alcohol, lactic acid, or other byproducts - Remember we normally recycle NADH to NAD+ using the ETC - No oxygen = we don’t use ETC
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  • Spring '16
  • Rafferty

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