phospholipid with hydrophilic head and hydrophobic tails. phospholipid molecule structure.

phospholipid structure molecule head tail hydrophilic hydrophobic bilayer membrane cell component lipid barrier protection polar icon medicine health education biology science chemistry transportation liposome micelle transport fatty acids phosphate glycerol epa dha organic choline ethanolamine serine amphiphilic model plasma chain symbol permeable phosphatide water insoluble fat soluble cytoplasm vector tails form bilayers act protect tails structure