...activation energy. For example, the catalyzed dissociation of a compound is hastened by exposing it to a positively charged catalyst, which attracts the anionic component of the reactant, and subsequently weakens the ionic bond between them. As a result, a lower energy is needed to completely break the bond between the compound (Masterton and Hurley, 2005, p. 303-304).
Despite its effectiveness, enzymes only work within a narrow range of conditions. Because they are usually proteins, a temperature lower or higher than the optimal range results to denaturation, which changes the shape... increase the rate of chemical reaction by inducing the reaction to proceed to a path with a lower activation energy....