BIO 1140 Chapter Notes - Chapter 5,42: Pyruvic Acid, Acetyl-Coa, Glycolysis
18 Aug 2016
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4. 1 laws of thermodynamics: energy cant be created or destroyed, energy transformations increase entropy. Occur if: eproduct < ereactants, sproducts>sreactants (products less ordered) s= entropy, when there is less free energy (g) in the system (more stable) a spontaneous reaction will occur. Spontaneity is a measure of whether the reaction occur, it does not measure the rate. Exergonic reactions will reach an equilibrium, not completion because equilibrium is the lowest free energy state. (when the product is a mixture with reactants, there is more disorder therefore favoured) 4. 2d metabolic pathways are made of exergonic and endergonic reactions. Metabolism: sum of chemical reactions in an organism. The product of one reaction is used in the next one. (energy coupling between exer and ender) Energy released from breaking down a large complex molecule into simpler ones. ex. Consumes e to build complex molecules from smaller ones.
