In coupled reactions, the energy released by a(n) is used to drive a(n) . ATP breakdown is often coupled to cellular reactions that require an input of energy.

Exergonic reaction; Endergonic reaction

In coupled reactions, the energy released by an exergonic reaction is used to drive an endergonic reaction. ATP breakdown is often coupled to cellular reactions that require an input of energy.

Explanation:

Cellular reactions include Exergonic and endergonic reactions. An exergonic reaction is one that occurs spontaneously and brings about the release of energy (in form of ATP). On the other hand, an endergonic reaction proceeds only with the input of energy.

Thus, exergonic reactions are usually coupled to endergonic reactions

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