Lipids:amphipathic molecules(双亲性分子) Polar end Choline (hydrophilic) （亲水性) 0 CH2-CH-CH2 Glycerol 0 0 c-0 C=O Nonpolar end (hydrophobic) (疏水性) This document is produced by trial version of Print2Flash.Visit www.printflash.com for more information