The main objective of cellular respiration is to convert biochemical energy from nutrients into adenosine triphosphate (ATP) and release waste products. This process occurs in all living organisms and involves several metabolic pathways, including glycolysis, the Krebs cycle, and the electron transport chain. The ATP produced serves as an immediate energy source for cellular activities, supporting functions like growth, repair, and homeostasis. Effective cellular respiration is vital for overall survival and energy balance within cells.