Answer:
The free energy released by the Exergonic reactions of Catabolic Pathways is stored in ATP. The energy released by its hydrolysis to ADP and Pi drives the Endorgenic reactions of Anabolic Pathways which synthesize the complex molecules. Also, during hydrolysis in mechanical and transport work, Potential energy is transformed into Kinetic energy. In these transfers and transformations, some energy is lost as heat. All the reactions of a cell require enzymes, which ensure efficient cell function by binding substrates and Increasing activation energy, thus speeding up metabolic reactions.
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