All the following are characteristics of the plasma membrane except:

Plasma membrane of eukaryotic cells has a thickness of about 5 nm, constituted by lipid bilayer and embedded proteins. Hence, option B is the answer. It is selective for the transpo of substances into or out of the cells - for active as well as passive transpos It consists of Na+-K+ pump. It causes active transpo of sodium out of the cell and that of potassium into the cell. Thus, ionic gradients are established. Option C is a correct statement. Proteins - Integral proteins (sensors for signals from the external environment) and peripheral proteins.