Question 11 Given that the standard reduction potential for NAD/NADH is -0.315 V

Question

Question 11 Given that the standard reduction potential for NAD/NADH is -0.315 V and that forO2/H2O is 0.815 V, write the net reaction (not reaction potential) involving these two redox pairs: Question 12 The NAD-specific isocitrate dehydrogenase and alpha-ketoglutarate dehydrogenase are two key regulatory enzymes of the citric acid cycle. One expect Ca^2+ to be an (inhibitor or activator). Question 13 Write the net reaction for the citric acid cycle: Question 14 The second stage of cellular respiration refers to the following process:

Explanation / Answer

11. Oxidation: NADH ---> NAD^+ + H^+ + e-

Reduction : O2 + 2e- + 2 H+ ---> H2O

overall reaction : 2NADH + O2 ---> 2NAD+ +

12. inhibitors

13. acetyl CoA + 3 NAD+ + FAD + ADP + Pi + 3H2O ---> 2 CO2 + 3NADH + 3H+ + FADH2 + ATP + CoA

14. krebs(citric acid cycle)

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