Final answer:
An exergonic reaction releases energy, and examples of exergonic reactions include cellular respiration and catabolic reactions.
Step-by-step explanation:
An exergonic reaction is a reaction that releases energy. It can be represented by the general chemical equation: Reactants → Products + Energy. Examples of exergonic reactions in biology include cellular respiration, catabolic reactions, and the breakdown of ATP. These reactions are spontaneous and can occur without the addition of energy into the system.