Question

PLEASE HELP WITH THIS ONE QUESTION
What is the electron transport chain?

A) a stage in which NAD+ and FAD give up their electrons to produce water needed by cells

B) a process in which ATP gives up its phosphate group to produce NADH and FADH2, which are required by the citric acid cycle

C) a process in which ATP gives up its phosphate group to drive the production of cell processes

D) a stage in which NADH and FADH2 give up their electrons to drive the production of many ATP molecules

Answer 1

In glycolysis and the Krebs cycle, NADH molecules are formed from NAD+. Meanwhile, in the electron transport chain, all of the NADH molecules are subsequently split into NAD+, producing H+ and a couple of electrons, too. ... In each of the enzymatic reactions, NAD+ accepts two electrons and a H+ from ethanol to form NADH.