Bacterial production of the enzymes needed for the synthesis of the amino acid tryptophan declines with increasing levels of tryptophan and increases as tryptophan levels decline. This is an example of
A) competitive inhibition.
B) noncompetitive inhibition.
C) feedback inhibition.
D) irreversible inhibition.

Question

Quizplus · Accepted Answer

This is an example of feedback inhibition, where the end product of a metabolic pathway (in this case, tryptophan) acts as an inhibitor of an earlier step in the pathway (enzyme synthesis).

Bacterial Production of the Enzymes Needed for the Synthesis of the Amino