The phospholipid bilayer makes up the plasma membrane and most internal compartmentalization within a cell. It is composed of a double phospholipid bilayer. How does the structure of the individual phospholipid affect the function of the cell membrane? Include in your discussion the functions of the cell membrane, the structure of the phospholipid, amphipathic molecules, selective permeability, semifluid, transmembrane proteins, and peripheral membrane proteins. Further, it is important for cells to allow some needed chemicals into the cellular environment and move other chemicals out of the cellular environment while expelling or retaining others. Describe how some materials are moved through the cell membrane while others are retained within the cell. Include in your discussion selective permeability, channel proteins, transport proteins, osmosis, hypertonic, hypotonic, isotonic, diffusion, gradients, active transport, exocytosis, and endocytosis.
