BIOL 1201 Chapter : 16-Feb
Document Summary
G= h t s: g- free energy change, h- enthalpy change, t- temperature (degrees kelvin, s- entropy change. G (double dagger: energy required for the favorable positioning of the reactants so the reaction can occur, transition state. Enzymes accelerate chemical reactions: reaction rates are increased because enzymes lower the activation energy barrier, enzymes cannot reverse energetically unfavorable reactions. How do enzymes lower the activation energy barrier. Enzmyes accelerate chemical reactions: the activation energy barrier is lowered because the enxyme postions the reactants in a conformation more favorable for the chemical reaction to occur. Activation envery: g , energy necessary for reaction to occur, temperature is a measure of how many molecules will have achieved the activation energy. Temperature: measure of the average kinetic energy of the molecules of a substance. Low tempraure- lowe enrgy associated with molecules: fewer molecules have energy greater than the activation energy.
