. (a) Calculate the standard free energy change as a pair of electrons is transferred from succinate to molecular oxygen in the mitochondr- ial respiratory chain. (b) Based on your answer in part (a), calculate the maximum num- ber of protons that could be pumped out of the matrix into the intermembrane space as these electrons are passed to oxygen. Assume 25 °C, ApH = 1.4; A = 0.175 V (matrix negative). (c) At which site(s) are these protons pumped?

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. (a) Calculate the standard free energy change as a pair of electrons is
transferred from succinate to molecular oxygen in the mitochondr-
ial respiratory chain.
(b) Based on your answer in part (a), calculate the maximum num-
ber of protons that could be pumped out of the matrix into the
intermembrane space as these electrons are passed to oxygen.
Assume 25 °C, ApH = 1.4; A = 0.175 V (matrix negative).
(c) At which site(s) are these protons pumped?
Transcribed Image Text:. (a) Calculate the standard free energy change as a pair of electrons is transferred from succinate to molecular oxygen in the mitochondr- ial respiratory chain. (b) Based on your answer in part (a), calculate the maximum num- ber of protons that could be pumped out of the matrix into the intermembrane space as these electrons are passed to oxygen. Assume 25 °C, ApH = 1.4; A = 0.175 V (matrix negative). (c) At which site(s) are these protons pumped?
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