The compounds in a biological membrane that form a barrier to the movement of hydrophilic materials across the membrane are
A) integral membrane proteins.
B) carbohydrates.
C) lipids.
D) nucleic acids.
E) peripheral membrane proteins.

Question

Quizplus · Accepted Answer

The lipids in a biological membrane form a hydrophobic interior, which provides a barrier to the movement of hydrophilic materials across the membrane. Carbohydrates, nucleic acids, and peripheral membrane proteins do not form this type of barrier. Integral membrane proteins can play a role in transport, but they are not the primary component that forms the hydrophobic barrier.

The Compounds in a Biological Membrane That Form a Barrier