Question

Which of the following occurs when a phosphate-phosphate bond in an ATP molecule is broken?

a) Light energy is absorbed by chloroplast.
b) Water is transported through a cell membrane.
c) Energy is released in the cell.
d) Energy is stored in the muscle.

Answer 1

c) Energy is released in the cell.

Step-by-step explanation:

Adenosine triphosphate (ATP) is used as an energy currency in the cell.

ATP is converted to ADP (adenosine diphosphate) when the bond between two of the phosphates is broken, and a phosphate is released.

This bond is a high energy bond, and when it is broken, lots of energy is released. This is why ATP is an energy currency inside the cell - when it is converted to ADP lots of energy is released.