What function does ATP serve in cellular processes?

ATP, or adenosine triphosphate, is widely recognized as the primary energy carrier in cells. This molecule plays a crucial role in various cellular processes by storing and providing energy that can be used for biochemical reactions. When ATP is hydrolyzed, it releases energy that drives many essential functions, including muscle contraction, active transport across membranes, and biosynthetic processes.

The energy released from ATP is used to phosphorylate other molecules, which helps to activate or drive various biochemical pathways. This property makes ATP vital for maintaining cellular activities and supporting life.

Given its role as an energy carrier, ATP is fundamental in metabolism, cellular respiration, and other processes where energy is required. In contrast, the other options refer to functions that ATP does not fulfill: it is not a genetic messenger, does not provide structural support, and is not directly involved in the process of cell division. Thus, recognizing ATP's role as the main energy currency in the cell highlights its importance in supporting life and facilitating numerous cellular functions.