Lipids are madeup with an alcahol and fatty acids that are linked by ester linkages (Some times Ether link). If the alcahol part is Glycerol, then it is called Glycero Phospho Lipids. Among the Glycero Phospho Lipids, Phospho tidyl ethanol amine is called cephalin CH2---coo--(CH2)n---CH3 | CH----Coo--(CH2)n----CH3 | CH2---o-PoH-o-o-CH2--CH2---NH2 Phosphoidyl Serne is another exampe for Gyceophospho lipids. In which it contain serine at ethanol amine place (Underlined portion of above structure) NH2-----CHCH2OH--COOH Solution Lipids are madeup with an alcahol and fatty acids that are linked by ester linkages (Some times Ether link). If the alcahol part is Glycerol, then it is called Glycero Phospho Lipids. Among the Glycero Phospho Lipids, Phospho tidyl ethanol amine is called cephalin CH2---coo--(CH2)n---CH3 | CH----Coo--(CH2)n----CH3 | CH2---o-PoH-o-o-CH2--CH2---NH2 Phosphoidyl Serne is another exampe for Gyceophospho lipids. In which it contain serine at ethanol amine place (Underlined portion of above structure) NH2-----CHCH2OH--COOH.