Question

Which of the following serves as an electron carrier in cellular respiration? ADP Acetyl-CoA NAD+ H2O

Answer 1

NAD\(^+\)

Answer 2

NAD+ is the answer.

FADH2 is also a electron carrier, but it carriers electrons through Complex II of the hydrogen gradient. NAD+ is the main carrier, because it will produce more ATP because it goes through Complex I through the end of Complex IV.

Answer 3

^^^ as a result it will produce the hydrogen gradient which will drive ATP synthases.

Answer 4

I don't know if I would call it the main carrier, after all both are required. If either is not present the process cannot take place. Though, it is true that NADH<-->NAD+ H+ is done in more places and in high numbers at individual places. Places in the metabolic pathway that is.