what type of biomolecule is atp

ATP is a biomolecule classified as a nucleotide, specifically a nucleoside triphosphate. It consists of adenine (a nitrogenous base) attached to ribose (a sugar) and three phosphate groups. ATP serves as the cell’s primary energy currency, releasing energy when the terminal phosphate bond is hydrolyzed to ADP (adenosine diphosphate) or to AMP, driving many cellular processes and metabolic reactions. In living cells, ATP is typically found complexed with Mg2+ and functions as both an energy carrier and a signaling molecule in various pathways.