What process uses an exergonic reaction to drive an endergonic reaction?

Energy coupling refers to the mechanism by which the energy released from an exergonic reaction is harnessed to drive an endergonic reaction. This concept is fundamental in biological systems, as it allows cells to perform work by utilizing the energy created during catabolic processes (like the breakdown of glucose) to power anabolic processes (such as the synthesis of ATP or other macromolecules).

In energy coupling, the energy from the spontaneous (exergonic) reaction is transferred to the non-spontaneous (endergonic) reaction, enabling the overall process to occur. This strategy is essential for maintaining the energy balance within cells, allowing for the efficient functioning of metabolic pathways.

Additionally, energy coupling is a key feature of ATP (adenosine triphosphate) usage, where the hydrolysis of ATP releases energy that can be utilized to drive various biological processes, effectively linking exergonic and endergonic reactions in a coordinated manner.