Vitamin A is a relatively small, lipid-soluble molecule that can behave as a hormone. Its receptor
A) is an ion channel receptor.
B) is a protein kinase receptor.
C) involves a G protein.
D) is not connected to the plasma membrane.
E) does not exist; vitamin A does not have a receptor.

Question

Quizplus · Accepted Answer

Vitamin A, being lipid-soluble, can pass through the cell membrane and bind to intracellular receptors, which are not connected to the plasma membrane.

Vitamin a Is a Relatively Small, Lipid-Soluble Molecule That Can