Final answer:
An endergonic reaction is a chemical reaction that absorbs energy and requires an input of energy to proceed. Examples include cooking and baking, and photosynthesis.
Step-by-step explanation:
An endergonic reaction is a chemical reaction that absorbs energy. In an endergonic reaction, the energy needed for the reaction to occur is greater than the energy released. This type of reaction requires an input of energy to proceed. Examples of endergonic reactions include cooking and baking, where heat energy is added to produce chemical reactions, and photosynthesis, where plants take in light energy to power the necessary reactions.