Question

State four important functions of plasma membrane.

Answer 1

The four main functions of the plasma membrane include identification, communication, regulation of solute exchange through the membrane, and isolation of the cytoplasm from the external environment. The plasma membrane is a semi-permeable phospholipid bilayer that contains a hydrophilic head and a non-polar hydrophobic tail. It contains hydrogen bonds between the phospholipids that help hold the plasma membrane together; cholesterol molecules are also embedded into the membrane for fluidity.