When arginine is added to a culture growing exponentially in a medium without arginine, what occurs?
A) All cellular growth ceases.
B) Growth continues, but the production of enzymes required for the synthesis of arginine increases.
C) Growth continues, but the production of enzymes required for the synthesis of arginine ceases.
D) The cell returns to the lag stage of growth to synthesize the proteins necessary for the metabolism of arginine.

Question

Quizplus · Accepted Answer

When arginine is added to the culture, the cell no longer needs to synthesize it, so the production of enzymes required for its synthesis ceases due to feedback inhibition.

When Arginine Is Added to a Culture Growing Exponentially in a Medium