Question

which of the following will pass through a cell membrane most easily? multiple choice small polar molecules small nonpolar molecules large polar molecules large nonpolar molecules large neutral molecules

Explanation:

Cell membranes are composed of a phospholipid - bilayer which has a non - polar interior. Small nonpolar molecules can easily diffuse through this non - polar region. Larger molecules and polar molecules have more difficulty passing through due to size and charge interactions with the membrane.

Answer:

Small nonpolar molecules