Selective permeation of membrane is activeBiomembrane, chemical composition isPhospholipid bilayer。Its principle is that it is selective to the passage of substances.
Selective permeation of substances through membranes has both the physical properties of semi permeable membranes and active selectivity, such as cell membranes.Therefore, the membrane with selective permeability must have semi permeability, and the membrane with semi permeability may not have selective permeability, but the active biofilm has selective permeability.