______________________ substances can pass through the plasma membrane.?

Answer 1

Non-polar (e.g. lipids)

Answer 2

alot of things pass through the plasma membrane, this question doesn't make any sense. Small molecules (such as glucose) and ions pass through through simple diffusion, but larger molecules (such as proteins) are able to pass through, but are actively transported by transmembrane proteins. The person who said nonpolar molecules is incorrect because certain transmembrane proteins are lined with polar amino acid side chains that alow polar molecules like water to come through.

Answer 3

cumbersome and charged molecules won't be able to bypass in the direction of the membrane via easy diffusion and require facilitated diffusion or lively delivery! Small uncharged molecules on the different hand are waiting to freely defuse via easy diffusion!