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Electron transfer in the mitochondrial respiratory chain may be represented by the reductive half reactions shown below. 1/2 O2 + 2 H+ + 2e- -> H₂O E°' = 0.815 FAD + 2H+ + 2e- FADH2 E° = -0.040V

Electron transfer in the mitochondrial respiratory chain may be represented by the reductive half reactions shown below. 1/2 O2 + 2 H+ + 2e- -> H₂O E°' = 0.815 FAD + 2H+ + 2e- FADH2 E° = -0.040V

Biochemistry
Biochemistry
6th Edition
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Reginald H. Garrett, Charles M. Grisham
Chapter21: Photosynthesis
Section: Chapter Questions
Problem 17P
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(a) Write out the net reaction, calculate ∆E ̊' for the reaction, and calculate the standard free-energy change (∆G°') for the overall oxidation/reduction reaction.


(h) How many moles of ATP could theoretically be generated per mole of FADH2 oxidized by this reaction, given a ∆G ̊' of ATP synthesis of + 31 kJ/mol? How many moles of ATP could be generated per mole of FADH2 oxidized by this reaction under more typical cellular conditions (where ∆G' of ATP hydrolysis is ~ -50 kJ/mol)? Be sure to show your work and explain your answer.

Electron transfer in the mitochondrial respiratory chain may be represented by the reductive half reactions shown below. 1/2 O2 + 2 H+ + 2e- -> H₂O E°' = 0.815 FAD + 2H+ + 2e- FADH2 E° = -0.040V
Transcribed Image Text:Electron transfer in the mitochondrial respiratory chain may be represented by the reductive half reactions shown below. 1/2 O2 + 2 H+ + 2e- -> H₂O E°' = 0.815 FAD + 2H+ + 2e- FADH2 E° = -0.040V
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