To a living organism which of the following has the greater amount of available energy per molecule?
Adenosine triphosphate (ATP) is a nucleoside triphosphate used in cells as a coenzyme. It is often called the 'molecular unit of currency' of intracellular energy transfer. ATP transports chemical energy within cells for metabolism. It is one of the end products of photophosphorylation, cellular respiration and fermentation and used by enzymes and structural proteins in many cellular processes, including biosynthetic reactions, motility and cell division. When the third phosphate group of ATP is removed by hydrolysis, a substantial amount of free energy is released.