CH 369 Lecture Notes - Lecture 2: Gibbs Free Energy, Eukaryote, Living Systems
Document Summary
Study of heat (thermo) and power (dynamics) Energy can neither be created nor destroyed . All living organisms obey the laws of thermodynamics. Need to understand the cooperation of these laws in biochemical systems. Portion of an energy change ( h) available or free to do useful work. Total energy content of system (more h, more energy) As t , s (higher the t, harder to stay together) Entropy is a measure of the dispersal of energy in a system. G = gfinal ginitial = gproducts greactants. + g means energy must by input into the system: costs energy to carry out reaction, nonspontaneous or endergonic. G means energy released by system: release of energy in carrying out reaction, spontaneous or exergonic. Note: this only says if it will occur not how fast it occurs. At equilibrium, g = 0: living systems are never at equilibrium. Life means order: this means in s.
