What is the difference between exergonic and endergonic reactions?

Exergonic reactions release energy, while endergonic reactions require energy input.

Exergonic and endergonic reactions are two types of chemical reactions that occur in living organisms. Exergonic reactions release energy, while endergonic reactions require energy input. In exergonic reactions, the reactants have a higher potential energy than the products, and the difference is released as energy. This energy can be used by the cell for various processes, such as muscle contraction or the synthesis of ATP. Examples of exergonic reactions include the breakdown of glucose during cellular respiration and the hydrolysis of ATP to ADP.

In contrast, endergonic reactions require an input of energy to proceed. The reactants have a lower potential energy than the products, and the energy required to drive the reaction comes from an outside source. This energy can come from various sources, such as light or the breakdown of ATP. Examples of endergonic reactions include the synthesis of glucose during photosynthesis and the synthesis of proteins from amino acids.

Overall, exergonic and endergonic reactions are important for maintaining the energy balance in living organisms. Exergonic reactions release energy that can be used for other processes, while endergonic reactions require an input of energy to proceed. Understanding these reactions is crucial for understanding the metabolic processes that occur in living organisms.