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The cell membrane is composed of the lipid bilayer. In addition to lipids most membranes contain proteins and carbohydrates. ________________________________________________________________. YOUR finger nails and hair are made out of Keratin. its a protein (so is whale baleen and animal horns)
membrane is composed of a double layer (bilayer) of phospholipid molecules with many protein molecules dispersed within it; In the fluid mosaic model, the double layer (bilayer) of molecules found in the cell membrane is made up of. A) cholesterol. B) phospholipids. C) carbohydrates.