The Second Law of Thermodynamics

Entropy is a measure of randomness or disorder in a system. Gases have higher entropy than liquids, and liquids have higher entropy than solids.Source: OpenStax Biology 2e OpenStax Biology 2e A living cell’s primary tasks of obtaining, transforming, and using energy to do work may seem simple. However, the second law of thermodynamics explains why … Continue reading The Second Law of Thermodynamics

Endergonic Reactions and Exergonic Reactions

This figure shows some examples of endergonic processes (ones that require energy) and exergonic processes (ones that release energy). These include (a) a compost pile decomposing, (b) a chick developing from a fertilized egg, (c) sand art destruction, and (d) a ball rolling down a hill. (credit a: modification of work by Natalie Maynor; credit … Continue reading Endergonic Reactions and Exergonic Reactions