What about a Well, A is known as the frequency factor and this basically describes the frequency of collision between the reactants. Remember, according to the collision theory, for a reaction to actually take place those reactants have to collide with a great enough energy. Now this collision frequency is described by A. And we know if the collisions are more frequent then it's more likely that we're going to produce the products. And so if the frequency of collision increases, the A value increases and the K will also increase. Now, does the enzyme affect A?