Cell Membrane Chapter 3a

1. Plasma membrane
   1. Components
      1. phospholipid bilayer
      2. glycolipids
      3. cholesterol
      4. proteins
         1. peripheral
         2. integral
            1. functions
               1. receptors
               • signal transduction
               1. transport
               • channels
               • carriers
      5. Fluid Mosaic Model
   2. Specialized membrane structures
      1. Microvilli
      2. Membrane Junctions
         1. tight junctions
         2. desmosomes
         3. gap junctions
   3. Molecular movement across membranes
      1. diffusion
      2. facilitated diffusion
         1. channels
         1. osmosis
         2. permeable vs selectively permeable
         3. solutions
            1. hypertonic solution
            2. hypotonic solution
            3. isotonic solution
      3. Directed movement
         1. active transport
            1. pumps
   4. Vesicular Transport
      1. endocytosis
         1. pinocytosis
         2. phagocytosis
            1. pseudopods
      2. exocytosis