BI110 Lecture Notes - Lecture 14: Polymerization, Living Systems, Activation Energy
Document Summary
Gibbs free energy (g) can be calculated for any molecule * (already noted) aa+bb < --- > cc+dd. Deltag for the reaction can be calculated: gfinal-ginitial. In exergonic reactions (top), met change in gibbs free energy is negative (deltag. < 0), and energy is released from system. In endoergonic reactions (bottom), net change in gibbs free energy is positive (deltag>0), and energy must be added to system. Spontaneous doesn"t necessarily mean quick; it means energetically favourable deltag = deltah tdeltas. Two factors can give rise to deltag, and therefore spontaneous reactions. Negative deltah (the system gives up potential energy ) Products are less ordered than reactants --large positive deltas (the system gives up order entropy increases) When energy is released it can be harnessed to do work. Picture: glucose 1 phosphate spontaneous converted to glucose 6 phosphate. No matter how much of glucose 1 phosphate you start with it will always try to get to their equilibrium.
