Bio lecture 10-17-08

Bio lecture 10-17-08 - B io lecture 10-17-08 Respiration a....

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Bio lecture 10-17-08 Respiration a. QUESTION i. The dG for the formation of atp from adp p and for the formation of nadh by reduction of nad+ in an average cell is 1. Positive 2. Negative 3. Neither positive nor negative I. Respiration i. Breathing ii. A mechanism for providing ATP and NADH iii. The release of free energy by oxidation reduction reactions 1. Example a. Glucose +o2 CO2 +H2O b. dG = -673 K cal/mol glucose iv. Through coupled reactions some of this free energy can be applied to the synthesis of atp and nadh b. Aerobic i. Glycolysis pyruvate oxidation citric acid cycle (only if O2 is present) ETC c. Fermentation (non aerobic) i. Glycolysis Pyruvate fermentation lactate or alcohol fermentation d. Cellular locations for energy pathways in eukaryotes and prokaryotes
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i. Eukaryotes 1. External to mitochondrion a. Glycolysis b. Fermentation 2. Inside mitochondrion a. Inner membrane i. ETC b. Matrix i. Citric acid cycle ii. Pyruvate oxidation ii. Prokaryotes
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Bio lecture 10-17-08 - B io lecture 10-17-08 Respiration a....

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