Question

which statements best compare the relationship between atp and adp?
with an input of energy, adp rearranges to become atp.
without any energy change, adp rearranges to become atp.
with an input of energy, adp combines with a phosphate group to become atp.
with a release of energy, adp combines with a phosphate group to become atp.

Explanation:

ATP (adenosine - triphosphate) is formed from ADP (adenosine - diphosphate) when ADP combines with a phosphate group and energy is input. This process is called phosphorylation. Energy is required to form the high - energy bond in ATP.

Answer:

With an input of energy, ADP combines with a phosphate group to become ATP.