Lecture 6 - Metabolism...

Lecture 6 - Metabolism... - Bond rearrangement> partial...

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Light energy CO 2 + H 2 O organic molecules + O 2 Heat energy photosynthesis respiration ecosystem
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C 6 H 12 O 6 + 6 O 2 6 CO 2 + 6 H 2 O + Energy Respiration ΔG = – 686 kcal/mole Organic compounds + Oxygen + Water + Energy Carbon dioxide
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Na + Cl Na + + Cl - Respiration Oxidation-Reduction Reactions Oxidation-Reduction Reactions Reduction: Reduction: gain of electrons ( i.e. reducing the charge ) Oxidation: Oxidation: loss of electrons Example 1: becomes oxidized becomes reduced
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2 Na + Cl 2 2 Na + + 2 Cl - Respiration Oxidation-Reduction Reactions Oxidation-Reduction Reactions Reduction: Reduction: gain of electrons ( i.e. reducing the charge ) Oxidation: Oxidation: loss of electrons Example 1 (more precisely): 2 Na 2 Na + + 2 e - Cl 2 + 2 e - 2 Cl -
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Respiration Oxidation-Reduction Reactions Oxidation-Reduction Reactions
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Unformatted text preview: Bond rearrangement ---> partial oxidation-reduction Example 2: Glycolysis Citric acid cycle Oxidative phosphorylation ATP ATP ATP e-carried by NADH e-carried by NADH and FADH 2 glucose pyruvate reduction oxidation 2 e-+ 2 H + H + NAD + NADH from sugars. .. NADH P P P P P P P i P P P P P P substrate-level phosphorylation Glycolysis Summary in the book: Fermentation (9.5) Coenzyme A Coenzyme A How do we get back NAD + and FAD? Krebs Cycle Summary Free Energy relative to O 2 (kcal/mol) H 2 O O 2 energy of “falling” electrons does work Complex I Complex III Complex IV Complex II FADH 2 → FAD metabolism is tightly regulated input materials come from many pathyways...
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This note was uploaded on 04/29/2008 for the course BIO V23.0011 taught by Professor Fitch during the Spring '08 term at NYU.

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Lecture 6 - Metabolism... - Bond rearrangement> partial...

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