Cellular processes refer to the various activities that occur within a cell to maintain life. These processes include metabolism, which involves the chemical reactions that convert food into energy, and cell division, where a cell replicates to produce new cells. Other important processes include protein synthesis, where cells create proteins necessary for function, and cell signaling, which allows cells to communicate with each other. These processes are essential for growth, repair, and overall function of living organisms. They are regulated by complex interactions between various molecules, including enzymes and hormones, ensuring that cells respond appropriately to changes in their environment.