Answer:
the last phosphate bond is broken
Step-by-step explanation:
Adenosine triphosphate, commonly known as ATP, is a high energy storage molecule. It is the form of energy usable by living cells to carry out their various life functions. ATP is synthesized in living systems during the process of cellular respiration.
ATP is a chemical compound that contains an Adenine base, ribose sugar, collectively called Adenosine, and three phosphate groups. Hence, the name Adenosine triphosphate. The stored energy in ATP is released when the bond holding the last phosphate group is broken. This releases a phosphate group and Adenosine diphosphate (ADP) molecule.