AP Biology Chapter 7 Notes(Pictures and Diagrams included)
Subject:
Biology [1]
Chapter 7: The Plasma Membrane Structure and Function PLASMA MEMBRANE- surrounds ALL cells Cell membrane separates living cell from aqueous environment Controls traffic in & out of the cell allows some substances to cross more easily than others A membrane is a collage of different proteins embedded in the fluid matrix of the lipid bilayer MEMBRANE MODELS 1915: Scientists analyzed isolated red blood cell membranes, found them made up of proteins and lipids 10 years later: E. Gorter and F. Grendel reasoned membranes are made of a phospholipid bilayer 1935: Hugh Davson and James Danielli proposed membrane was a ?sandwich? of proteins and phospholipid bilayer with proteins on outside of phopholipids