Steroid and thyroid hormones do not bind to membrane surface receptors because they ____.
A) are small enough to pass directly through the membrane
B) are soluble in the lipid bilayer
C) pass through special membrane channels
D) are water-soluble
E) dissolve in the cholesterol present in cell membranes

Question

Quizplus · Accepted Answer

Steroid and thyroid hormones are lipid-soluble, allowing them to pass through the lipid bilayer of cell membranes without the need for membrane surface receptors.

Steroid and Thyroid Hormones Do Not Bind to Membrane Surface