Membrane transport

Study tips for Quiz 3 Fluid mosaic membrane model Selective permeability: control what goes in and out of cell Compartmentalization: different processes can be separate Phospholipids-main component of membranes (50% by weight) Structure: hydrophilic heads faces out (water loving) polar surface Hydrophobic tails face in (weather fearing) non-polar region Interior 1972 singer and Garth Fluid- lipids and proteins can move relative to each other within membrane The typical membrane structure consists of a phospholipid bilayer with a number of proteins scattered throughout, along with some carbohydrates (glycoproteins), glycolipids and sterols, similar to the way in which one does a mosaic tile, hence the name. molecules involved in membrane transport Pg 107 fig 5.12