The _____ portion of the cell membrane functions as a barrier while the ______ portion provides specific functions,including pumps,receptors,adhesion,etc.
A)carbohydrate; nucleic acid
B)lipid; protein
C)lipid; carbohydrate
D)nucleic acid; lipid

Question

Quizplus · Accepted Answer

The lipid portion of the cell membrane, specifically the phospholipid bilayer, functions as a structural barrier to prevent molecules from freely entering or leaving the cell. The protein portion of the membrane, on the other hand, provides specific functions such as channel proteins for transporting molecules, receptor proteins for signaling and communication, and adhesion proteins for cell-to-cell interactions. Carbohydrates and nucleic acids are not major components of the cell membrane.

The _____ Portion of the Cell Membrane Functions as a Barrier