Because a Steroid Hormone is Nonpolar,it ____

Question

Because a steroid hormone is nonpolar,it ____.  
A) must be transported across a cell membrane with a receptor molecule
B) is equipped with specific receptor molecules
C) can dissolve in blood
D) can diffuse directly across a cell membrane
E) is an inhibiting hormone

Accepted Answer

Nonpolar molecules, like steroid hormones, can diffuse directly across cell membranes without the need for a receptor molecule or being transported across the membrane. Because of their nonpolar nature, they are able to dissolve in lipids, including the phospholipid bilayer of cell membranes.