What is the amount of calories released from breaking one high energy phosphate bond in ATP?

The correct amount of calories released from breaking one high-energy phosphate bond in ATP is approximately 7,500 to 10,000 calories per mole, which is commonly rounded to 12,000 calories when considering physiological equivalents. ATP, or adenosine triphosphate, is known for its role as the energy currency of the cell. The energy released from the hydrolysis of ATP to ADP (adenosine diphosphate) and inorganic phosphate is what powers many biochemical processes in living organisms.

When ATP is hydrolyzed, it releases energy that is used for activities such as muscle contraction, active transport across cell membranes, and the synthesis of macromolecules. Understanding this energy release is crucial in physiology and nursing practice, as it underpins the energy metabolism that supports all cellular functions.

The other amounts listed do not correspond to the commonly accepted value for the energy released from a single high-energy phosphate bond in ATP, making them less relevant in this context.