what is the primary energy molecule of the cell
A critically important macromoleculeâarguably âsecond in importance only to DNAââis ATP. ATP is a complex nanomachine that serves as the primary energy currency of the cell (Trefil, 1992, p.93). A nanomachine is a complex precision microscopic-sized machine that fits the standard definition of a machine. ATP is the âmost widely distributed high-energy compound within the human bodyâ (Ritter, 1996, p. 301).