Energetics

All organisms are controlled by the laws of physics and chemistry. Some of the most basic ideas are those dealing with energy.

Energy can be converted from one form to another, but it cannot be created nor destroyed.

All conversions are less than 100% efficient; some of the energy is always lost in the form of heat.

 Reactions that require an input of energy (endergonic) are unlikely to occur spontaneously.

Reactions that give off energy (exergonic) are more likely to occur spontaneously.