Which of the following is FALSE regarding the electron transfer system in mitochondria? A) The subunits of cytochrome c oxidoreductase (complex IV) are associated to eukaryotic proteins. B) Oxidation of NADH + H⁺ contributes to the formation of a larger $$\Delta$$p. C) The initial oxidoreductase, the NADH dehydrogenase (complex I), pumps more protons than the NDH-1 in Escherichia coli. D) The succinate dehydrogenase (complex II) contributes to $$\Delta$$p by pumping protons onto the intermembrane space. E) The ETS of some bacteria, such as Paracoccus denitrificans, are organized in a manner similar to that of mitochondria.

Question

Quizplus · Accepted Answer

Complex II (succinate dehydrogenase) does not pump protons across the mitochondrial membrane; it transfers electrons from succinate to ubiquinone but does not contribute directly to the proton gradient ($$\Delta$$p).

Which of the Following Is FALSE Regarding the Electron Transfer Δ\DeltaΔ

Which of the Following Is FALSE Regarding the Electron Transfer $\Delta$