Choose the correct path taken by a pair of electrons as it travels down the electron-transport chain. A) NADH $\rightarrow$ Complex I $\rightarrow$ CoQ $\rightarrow$ Complex III $\rightarrow$ Cyt c $\rightarrow$ Complex IV $\rightarrow$ O₂ B) FADH₂ $\rightarrow$ Complex I $\rightarrow$ CoQ $\rightarrow$ Complex III $\rightarrow$Cyt c $\rightarrow$ Complex IV $\rightarrow$O₂ C) NADH $\rightarrow$ Complex I $\rightarrow$ Complex II$\rightarrow$ Complex III $\rightarrow$ Cyt c $\rightarrow$Complex IV $\rightarrow$ O₂ D) FADH₂ $\rightarrow$ Complex III $\rightarrow$ CoQ $\rightarrow$ Complex II $\rightarrow$ Cyt c $\rightarrow$ Complex IV $\rightarrow$ O₂ E) None of the answers is correct.

Question

Quizplus · Accepted Answer

NADH is oxidized by Complex I, which passes electrons to CoQ. CoQ then passes electrons to Complex III, which passes electrons to Cyt c. Cyt c then passes electrons to Complex IV, which reduces O2 to H2O.

Choose the Correct Path Taken by a Pair of Electrons →\rightarrow→

Choose the Correct Path Taken by a Pair of Electrons $\rightarrow$