Membrane Proteins That Extend into the Lipid Bilayer are Called

Question

Membrane proteins that extend into the lipid bilayer are called
A) integral proteins.
B) lipoproteins.
C) peripheral proteins.
D) glycoproteins.
E) extrinsic proteins.

Accepted Answer

Integral proteins extend into the lipid bilayer and are firmly embedded within it, meaning they are an integral part of the membrane structure. Lipoproteins contain both protein and lipid components. Peripheral proteins are found on the surface of the membrane and are not embedded within it. Glycoproteins have carbohydrate chains attached to the protein portion and may be found on the surface or embedded within the membrane. Extrinsic proteins are not typically found within the membrane itself, but may associate with it on one side or the other.