Bioenergetics is the study of how living organisms convert energy from food into usable forms. It focuses on the processes that generate and utilize energy within cells, primarily through cellular respiration and photosynthesis. These processes are essential for maintaining life, as they provide the energy needed for growth, reproduction, and other vital functions. In bioenergetics, energy transformations are often measured in terms of ATP (adenosine triphosphate), the primary energy carrier in cells. Understanding bioenergetics helps researchers explore how energy flow affects metabolism, health, and disease, contributing to fields like biochemistry and physiology.