Which of the protein complexes labeled with Roman numerals in Figure 7.2 will transfer electrons to O2?
A) complex I
B) complex II
C) complex III
D) complex IV
E) All of the complexes can transfer electrons to O2.

Question

Quizplus · Accepted Answer

Complex IV, also known as cytochrome c oxidase, transfers electrons to O2 by catalyzing the reduction of O2 to H2O. None of the other complexes transfer electrons directly to O2.

Which of the Protein Complexes Labeled with Roman Numerals in Figure