Question: The free energy change G for the oxidation of the cytochrome
The free-energy change (∆G°') for the oxidation of the cytochrome aa3 complex by molecular oxygen is – 102.3 kJ = – 224.5 kcal for each mole of electron pairs transferred. What is the maximum number of moles of ATP that could be produced in the process? How many moles of ATP are actually produced? What is the efficiency of the process, expressed as a percentage?
Answer to relevant QuestionsCalculate E°' for the following reaction: NADH + H+ + 1/2 O2 ( NAD+ + H2O Calculate the net ATP yield from linoleic acid (18:2 D9,12). For this calculation, assume that the loss of an NADPH is the same as the loss of an NADH. In fatty-acid synthesis, malonyl-CoA, rather than acetyl-CoA, is used as a “condensing group.” Suggest a reason for this. Albert Szent-Gyorgi, a pioneer in early photosynthesis research, stated, “What drives life is a little electric current, kept up by the sunshine.” What did he mean by this? Reflect and apply Suggest a reason why the evolution of the pathway for the regeneration of ribulose-1,5-bisphosphate from glyceraldehyde-3-phosphate was “no big deal.”
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