5.1 Elements of the PhospholipidOnline version The basic components of the double layer of phospholipids that make up the cell membrane. by Jorge Arizpe 1 Nitrogen base (ex: Choline) 2 Phosphate Group 3 Glycerol 4 Fatty acid chain 5 Hydrophilic head (polar) 6 Hydrophobic Tails (non-polar) 7 Phospholipid molecule 8 Double Layer of Phospholipids