BI110 Chapter Notes - Chapter 4: Metabolic Pathway, Equilibrium Point, Activation Energy
Document Summary
Phase changes result in an increase in entropy: solid liquid gas. Energy available to do work: g = h t s. (delta) = change (final state initial state) G = change in free energy (gibbs free energy) As reaction goes to completion, its influence by 2 factors: change in energy content: h, changes in entropy: s. G means that the products have less free energy then the reactions. Equilibrium point is reached when reactants are converted to products and products are converted back to reactants at equal rates g = 0. G of life always negative as organisms take in energy-rich molecules (or light, if photosynthetic) and use them to do work. Organisms reach equilibrium, g = 0, only when they die. Two groups of reactions: exergonic reaction where g is negative because products contain led free energy than reactants, endergonic reactions where g is positive because products contain more free energy than reactants.
