ATP Synthase is an essential enzyme found in the membranes of cells, where it plays a crucial role in energy production. It synthesizes adenosine triphosphate (ATP), the primary energy carrier in living organisms, by using a flow of protons across the membrane. This process occurs during cellular respiration and photosynthesis, where energy from food or sunlight is converted into a usable form. The structure of ATP Synthase resembles a turbine, with a rotor that spins as protons pass through it. This spinning action drives the conversion of ADP and inorganic phosphate into ATP. By generating ATP, ATP Synthase provides the energy necessary for various cellular functions, supporting life processes.