All of the Following Are True of the Plasma Membrane

Multiple Choice

All of the following are true of the plasma membrane, except

A) it is mainly composed of a phospholipid bilayer.
B) it is selectively permeable to various substances, controlling which substances can cross the membrane.
C) the glycocalyx provides structural integrity to the plasma membrane.
D) transmembrane proteins may function as ion channels, enzymes, or receptors.
E) charged or large molecules can sometimes enter a cell via membrane proteins.