which of the following describes the fluid mosaic model of the plasma membrane structure?which of the following describes the fluid mosaic model of the plasma membrane structure?phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chains.the plasma membrane is composed of two layers of proteins embedded with lipids.the phospholipid bilayer is embedded with associated proteins, cholesterol and sugars and has a dynamic arrangement.the lipid bilayer is solid at body temperature, thus protecting the cell.