Adenosine triphosphate (atp) is the main \"energy currency\" used in cells. atp hydrolysis is coupled with unfavorable reactions, making the net change in energy for the set of reactions less than zero (favorable). although atp is the main energy currency, other molecules can fulfill this role and take part in coupled reactions. determine whether each of the phrases or examples describes a thioester, reduced cofactor, or phosphorylated compound: acetyl-coa, guanosine triphosphate, nadh, the sulfur-carbon bond is hydrolyzed, these compounds yield h2po4- upon hydrolysis, these compounds accept e- during the oxidation of substrates and energy is released when they are oxidized.