Where is the receptor for a nonpolar,lipid-soluble regulatory molecule?
A)embedded in the outer surface of the plasma membrane
B)embedded in the inner surface of the plasma membrane
C)in the cytoplasm or nucleus of the cell
D)All of the choices are correct.

Question

Quizplus · Accepted Answer

Nonpolar, lipid-soluble regulatory molecules can diffuse through the plasma membrane to reach the cytoplasm or nucleus where their receptors are located. Therefore, the receptor for this type of molecule is in the cytoplasm or nucleus of the cell. Choices A and B refer to receptors for polar, water-soluble molecules which are typically embedded in the plasma membrane. Choice D is incorrect as only choice C is correct.

Where Is the Receptor for a Nonpolar,lipid-Soluble Regulatory Molecule