The cell membrane, or plasma membrane, is made up of a lipid bilayer in which hydrophilic heads face outward and hydrophobic tails face inward.
phospholipid bilayer
The structure of the cell membrane allows it to
A.
fuse with ribosomes during DNA replication.
B.
prevent all viral and bacterial infections.
C.
control the movement of substances into and out of the cell.
D.
absorb water from the cytoplasm whenever necessary.