Cells Regulate Their Level of Activity by Regulating the Amount

Multiple Choice

Cells regulate their level of activity by regulating the amount of proteins present in the cell at any given time, so an up regulation of enzymes would be expected to

A) increase the cell's response that is produced by the reaction catalyzed by the enzyme.
B) decrease the level of productivity of chemical reactions that rely on them.
C) have no effect on the rate of reactions catalyzed by the enzymes.
D) decrease the rate of reactions catalyzed by the enzymes.
E) both decrease the level of productivity of chemical reactions that rely on them and decrease the rate of reactions catalyzed by the enzymes.