Figure3.5 Fluid mosaics（1)流动镶嵌 The matrix of the unit membrane is composed of phospholipids,with the hydrophobic groups directed inward and the hydrophilic groups toward the outside,where they associate with water. Out Phospholipids Hydrophilic groups 6-8nm Hydrophobic groups In Integral membrane Phospholipid proteins molecule Piagran of the structure of the cytoplasmic membrane ©2012 PearsonFigure 3.5 Phospholipids Integral membrane proteins 6–8 nm Hydrophilic groups groups Hydrophobic Out In Phospholipid molecule © 2012 Pearson Education, Inc. Fluid mosaics (1) 流动镶嵌 The matrix of the unit membrane is composed of phospholipids, with the hydrophobic groups directed inward and the hydrophilic groups toward the outside, where they associate with water. Diagram of the structure of the cytoplasmic membrane