A barrier to the rapid movement of hydrophilic compounds across biological membranes is made up chiefly of

Question

Quizplus · Accepted Answer

The hydrophobic interior of biological membranes is made up of lipids, which form a barrier to the movement of hydrophilic molecules such as ions and polar molecules. Integral membrane proteins and peripheral membrane proteins can help facilitate the movement of such molecules across the membrane, but the main barrier is the hydrophobic lipid bilayer. Carbohydrates do not typically form a significant part of the lipid bilayer and would not contribute to this barrier.

A Barrier to the Rapid Movement of Hydrophilic Compounds Across