Correct Answer :
A. RBC of human
RBC (red blood cell) of the human is the best material for the study of structure of cell membrane. Chemical studies on the RBC cell membrane enabled the scientists to infer the possible structure of plasma membrane. The plasma membrane of the RBC consists of a complex, well-ordered group of lipids and proteins stretched over the outer surface of the cell in the form of a lipid bilayer punctuated by penetrating or attached proteins. This membrane has numerous properties that arise in part from specialized interactions between specific membrane proteins or lipids, or both.