Which of these processes results in depletion of protonsin the matrix and buildup of protons in the intermembrane space of the mitochondrion?
a.) Oxidation of NAD+ by FMN and subsequent reduction ofthe Fe-S cluster of complex I.
b.) Oxidation of FMNH2 by the Fe-S cluster in complexI.
c.) Formation of water in the intermembranespace
d.) Oxidation of FADH2 by the Fe-S cluster in complexII
e.) none of these contribute to the pH gradient.