<prompt> All of the following are true about cell membrane lipids exceptAmphipathic in natureExhibit lateral diffusion along with proteinsExhibit symmetrical arrangementForm bilayer  <response>: Membrane lipids are amphipathic. Membrane lipids form bilayers. An indicator of the dynamic nature of membranes is that a variety of studies have shown that lipids and ceain proteins exhibit lateral diffusion in the plane of their membranes. There is also inside-outside asymmetry of the phospholipids. The choline-containing phospholipids phosphatidylcholine and sphingomyelin are located mainly in the outer leaflet; the aminophospholipids phosphatidylserine and phosphatidylethanolamine are preferentially located in the inner leaflet. . 