In addition to activating or inhibiting enzymes through allosteric regulation, what other means does a cell use to control enzymatic activity?
A) localization of enzymes into specific organelles or membranes
B) secretion of enzymes out of the cell
C) assembly of enzymes into large aggregates
D) altering internal pH

Question

Quizplus · Accepted Answer

Cells can control enzymatic activity by localizing enzymes into specific organelles or membranes. For example, digestive enzymes are located in lysosomes and enzymes responsible for oxidative phosphorylation are located in the mitochondria. This ensures that the enzymatic activity is concentrated in specific locations within the cell where it is needed.

Answer: D 
 Altering internal pH is another means by which cells can control enzymatic activity. Enzymes have an optimal pH range in which they function most efficiently. By changing the pH of the environment, the activity of the enzyme can be altered. For example, the stomach maintains an acidic pH to activate digestive enzymes such as pepsin.

In Addition to Activating or Inhibiting Enzymes Through Allosteric Regulation