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.

Question

Quizplus · Accepted Answer

The glycocalyx on the plasma membrane does not provide structural integrity, but rather acts as a cell's "ID card," allowing cells to recognize one another and communicate. The phospholipid bilayer, selective permeability, and functions of transmembrane proteins are all characteristics of the plasma membrane. Additionally, charged or large molecules can enter a cell via membrane proteins such as ion channels or transporters.

All of the Following Are True of the Plasma Membrane