How Do Peripheral Proteins Contribute to the Structure of the Plasma

Multiple Choice

How do peripheral proteins contribute to the structure of the plasma membrane?

A) They form a structural element by being embedded in the plasma membrane.
B) Some form channels to permit passage of water molecules, ions, and small water-soluble compounds into and out of the cell.
C) Some may function as catalysts.
D) They are attached to either the inner or outer surface of the membrane.
E) None of the answers are correct.