Many physiological conditions are related to particular proteins in cell membranes. The number of insulin receptors in membranes is related to the amount of insulin present around those cells. If the presence of increased insulin results in a decrease in receptors and a decrease in insulin results in an increase in insulin receptors, this would be an example of
A) a metabolic pathway.
B) feedback inhibition.
C) passive transport.
D) competitive inhibition.

Question

Quizplus · Accepted Answer

This is an example of feedback inhibition, where the presence or absence of a molecule (insulin in this case) leads to a decrease or increase in the corresponding receptor in order to maintain homeostasis.

Many Physiological Conditions Are Related to Particular Proteins in Cell