Nonequilibrium Thermodynamics and Cellular Bioenergetics
The aim of every evolved and adapted biological system consists in converting the energy contained in the foodstuff into useful work in the possibly most efficient manner. This work may consist in muscular contraction, directed ion transport across a membrane, biosynthesis of the building blocks of the organism etc. The common denominator to all these energy consuming reactions is to make use of the quality of energy to do work or, in other words, to exploit the possibility of using directed energy rather than randomized thermal motion. Directed energy has been called exergy in contrast to randomized thermal motion which is called entropy1,2.
KeywordsOxidative Phosphorylation Thermal Motion Optimal Efficiency Directed Energy Energy Converter
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