ATP (Adenosine Trisphosphate)

Adenosine triphosphate (ATP) is the primary energy carrier in cells. It functions like a rechargeable battery, storing and delivering energy needed for various biological processes such as muscle contractions, nerve signaling, and chemical reactions. When cells need energy, ATP releases a phosphate group, transforming into ADP (adenosine diphosphate), and then can be recharged back into ATP through metabolic pathways like cellular respiration. This constant cycle keeps cells energized and functioning effectively, making ATP essential for sustaining life.