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

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.

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.

answer; both surfaces of the membrane are nonpermeable