The lipid bilayer of the plasma membrane is permeable to all of the following substances EXCEPT

Question

Quizplus · Accepted Answer

The lipid bilayer of the plasma membrane is permeable to small, nonpolar molecules such as oxygen, carbon dioxide, and fat-soluble vitamins, as well as small uncharged polar molecules like water. However, it is not permeable to large, polar molecules such as amino acids which require membrane transporters to pass through the membrane. Steroids, being a subtype of fat-soluble molecules, can readily pass through the lipid bilayer.

The Lipid Bilayer of the Plasma Membrane Is Permeable to All