Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
ATP hydrolysis refers to the breakdown of adenosine triphosphate (ATP) molecules into adenosine diphosphate (ADP) and inorganic phosphate (Pi). This process releases energy that can be utilized by cells for various cellular activities.
Related terms
Adenosine Diphosphate (ADP): A molecule formed when one phosphate group is removed from ATP. ADP can be converted back into ATP through cellular respiration, where energy is stored for later use.
Inorganic Phosphate (Pi): The inorganic phosphate released during ATP hydrolysis. It can be recycled and used to regenerate ATP through processes like oxidative phosphorylation.
Cellular Respiration: The process by which cells convert glucose and oxygen into carbon dioxide, water, and ATP. It involves multiple chemical reactions, including the hydrolysis of ATP to release energy that fuels cellular activities.