Membrane Transport

I.  Selective Permeability of the Phospholipid Bilayer (PL)
	A.  What is permitted to cross
	B.  What needs a transport protein due to poor
		or highly impermeant nature
	C.  "Specificity designed by type of proteins but 
		rate and direction of flow designed by its
		concentration gradient"
	D.  Introduction to Simple Diffusion
		1.  Random walk theory; Brownian movement
		2.  Does NOT require energy
		3.  Solutes move down a concentration gradient
	
II.  Passive Transport
	A.  Simple diffusion across a membrane
		1.  Concentration gradients
		2.  Equilibrium
	B.  Osmosis
		1.  Isotonic
		2.  Hypertonic
		3.  Hypotonic
	C.  Facilitated Diffusion
		1.  Saturation
		2.  Types of Facilitated diffusion
			a.  aquaporins
			b.  gated channels
				1.  opened by voltage
				2.  opened by ligands

III.  Active Transport
	A.  Phosphorylation by ATP and energy requirement
	B.  Sodium/Potassium ATPase pump
	C.  Co-Transport (Secondary Active Transport)