Section 1. Chemical components of cell Membrane and their molecular structure 1.Chemical components of cell membrane (1) lipids constitute the skeleton of the membrane phospholipids 膜脂( membrane lipid){ cholesterol glycolipidSection 1. Chemical components of cell Membrane and their molecular structure 1.Chemical components of cell membrane （1）lipids constitute the skeleton of the membrane 膜脂（membrane lipid） phospholipids cholesterol glycolipid