Question

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what would happen to the rate of a reaction if the concentration of substrate was increased after the point of saturation? the reaction rate would decrease. there would be no effect. the reaction rate would increase.

Explanation:

At the saturation point of an enzyme - catalyzed reaction (or in general reaction kinetics related to substrate - enzyme or substrate - reactant interactions), all the active sites (or the available reaction - promoting factors) are already occupied by the substrate. When we increase the substrate concentration beyond this point, there are no additional "active sites" (or factors) to bind with the extra substrate molecules. So, the reaction rate does not change, meaning there is no effect on the reaction rate.

Answer:

There would be no effect.