Question

Energy is released to be used by a cell when a phosphate group is

Answer 1

Answer:

C

Explanation:

ATP is an abbreviation of the molecule adenosine triphosphate.

ADP is an abbreviation of the molecule adenosine diphosphate.

A phosphate bond is an extremely high energy bond, meaning a lot of energy is required to form such a bond, and breaking such a bond would result in the release of a lot of energy.

ATP has three phosphates, while ADP only has two, and hence a release in energy would be the result of removing a phosphate from an ATP molecule to form ADP.

Answer 2

The correct answer is C.
Energy is released to be used by a cell when a phosphate group is removed from ATP to form ADP.  

ATP hydrolysis is a process in which the chemical energy is released from the high-energy molecule-ATP (adenosine triphosphate).