Endergonic Reaction

Definition

An endergonic reaction is one where energy is absorbed from surroundings. These reactions are non-spontaneous and require an input of energy to proceed.

Analogy

Endergonic reactions are like going uphill on a bike - you need to put in extra effort (energy) to reach the top.

Related terms

Activation Energy: The minimum amount of energy required for a chemical reaction to occur. This would be equivalent to the initial push needed to start pedaling uphill on your bike.

Catalyst: A substance that speeds up a chemical reaction without being consumed by it. Like having an electric motor on your bike helping you pedal uphill easier.

Photosynthesis: A process used by plants and other organisms to convert light energy into chemical energy; this is an example of an endergonic reaction because it requires sunlight (energy).