What aspect of the membrane prevents water soluble substances from crossing the membrane?
A) membrane phospholipids.
B) how much cholesterol is present.
C) the number and types of membrane proteins.
D) the charge of the membrane.
E) none of these answers.

Question

Quizplus · Accepted Answer

The membrane phospholipids form a hydrophobic barrier that prevents water-soluble substances from crossing the membrane. The polar heads of the phospholipids face outward, interacting with the aqueous environment, while the nonpolar tails face inward, creating a hydrophobic interior. This barrier prevents the passage of hydrophilic substances.

What Aspect of the Membrane Prevents Water Soluble Substances from Crossing