BIOL 1201 Lecture : 2 14 Biology Lecture Siebenaller
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Endergonic- delta g value will be positive; synthesis of complex molecules requires input of energy, they are anabolic (biosynthetic) reactions. Have to supply energy; atp, the energy currency of the cell. Coupling energetically unfavorable reactions with favorbale reactions, so that the. Represents the activation energy barrier net energy change is gonna be neg. Exergonic (exothermic)( spontaneous chem reations always release energy. Delta g double dagger the height of the barrier determines the reaction rate. Delta g double-dagger- the energy required for the favorable positioning of the reactants so that it can occur. Enzymes accelerate chem reactions reactants in a conformation that makes the reaction more likely to occur. Reaction rates are increased because enzymes lower the activation energy. The activation energy barrier is lowered because the enzyme positions the. Measures the average kinetic energy of molecules of a substance. Fewer molecules that have enough energy to get over activation energy.
