PHYSIOL 335 Study Guide - Midterm Guide: Peripheral Membrane Protein, Tight Junction, Extracellular Fluid
Document Summary
Phospholipid bilayer, and peripheral, integral, and transmembrane proteins, and carbohydrate part of proteins. Draw/describe the fluid mosaic model of a plasma membrane. The phospholipids move quite easily within the bilayer, most often laterally even though they can flip-flop also. The phospholipid bilayer consists of hydrophilic head groups and hydrophobic tails. Notes page 14: differentiate between peripheral membrane proteins, integral membrane proteins, and transmembrane proteins. Peripheral membrane proteins are bound to the periphery of the plasma membrane, and they help with the cytoskeleton and structure of the cell. Integral membrane proteins are imbedded in the plasma membrane and are not easily removed; they can also be transmembrane but they don"t have to be. Desmosomes are junctions that hold two cells together; they consist of plasma membranes of adjacent cells linked by fibers, yet separated slightly by extracellular space filled with a cementing substance.
