Lecture+15+-+Respiration+1

Lecture+15+-+Respiration+1 - 1 Glycolysis(Glucose Pyruvate...

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10/23/2011 1 Respiration: Respiration : Process by which carbon compounds are completely oxidized into CO 2 and H 2 O using O 2 as the final electron acceptor. Energy released during this oxidation reaction is stored as ATP (chemical energy). C 6 H 12 O 6 + 6O 2 ---------- 6CO 2 + 6H 2 O Oxygen available Oxygen unavailable Reduction of CO 2 and glucose synthesis Oxidation of glucose coupled with ATP generation ATP generation without oxygen Energy relationships of life (production, storage and use) + 6H 2 O ADP ATP glucose CO 2 + 6O 2 P i Aerobic Cellular Respiration : Carbohydrates + O 2 CO 2 + H 2 O Energy (ATP)
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10/23/2011 2 ATP synthesis by respiration + 6H 2 O ADP ATP glucose CO 2 + 6O 2 P i NAD + FAD + NADH FADH 2 ATP ATP (A denosine T riP hosphate) What is NADH? (N icotinamide A denine D inucleotide) NADH is one of the reducing power carriers used in cellular respiration
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10/23/2011 3 11.2 Structures and reactions of major electron-carrying cofactors (Part 2) 11.5 Structure of plant mitochondria Major steps in respiratory process
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Unformatted text preview: 1) Glycolysis (Glucose Pyruvate) 2) Citric acid (Krebs) cycle 3) Oxidative phosphorylation These steps are spatially separated in the cell - glycolysis (cytosol) - Citric acid cycle (matrix – mitochondria) - Oxidative phosphorylation (membrane – mitochondria) 10/23/2011 4 Glycolysis (summary ) (1) Glucose (2) Pyruvate 4 ATP formed 2 NADH 2 ATP used glucose activated (2) pyruvate 2 pyruvate molecules, 2 ATP molecules and 2 NADH molecules are produced for each glucose molecule 2 ATP used 4 ATP made 2 NADH made Glycolysis Glucose ATP ADP ATP ADP Pi ATP ADP ADP ATP NADH NAD + 2 x 2 ATP 2 x NADH H Citric acid (Krebs) cycle Pyruvate Krebs cycle CO 2 NADH ATP 3 NADH 1 FADH 2 Acetyl CoA (3 C) (2 C) 2 CO 2 4 C 6 C CoA 10/23/2011 5 11.6 Reactions and enzymes of the plant citric acid cycle NADH and FADH 2 formed during glycolysis and Krebs cycle give their electrons to an electron transport chain in the cristae membrane....
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