How does ATP power cellular work?
Adenosine-5’-triphosphate (ATP) is a multifunctional nucleotide that is most important as a “molecular currency” of intracellular energy transfer. In this role, ATP transports chemical energy within cells for metabolism. It is produced as an energy source during the processes of photosynthesis and cellular respiration and consumed by many enzymes and a multitude of cellular processes including biosynthetic reactions, motility and cell division. In signal transduction pathways, ATP is used as a substrate by kinases that phosphorylate proteins and lipids, as well as by adenylate cyclase, which uses ATP to produce the second messenger molecule cyclic AMP.
In layman’s terms and my terms: ATP molecules are simply used for energy transference a the molecular level. You eat something - say carbohydrates or whatever - the food is divided up and the energy components are instituted on a molecular level, and these components give you energy each day. Your body can store energy and release energy depending on its needs.