1. TRANSPORT ACROSS MEMBRANES
KEY CARD
TRANSPORT ACROSS MEMBRANES

2. KEY CARD
ACTIVE
PASSIVE
NO HELPER
MEMBRANE PROTEIN
VESICLE

3. DIFFUSION
EX: Oxygen & Carbon dioxide

4. FACILITATED DIFFUSION (Carrier proteins)
EX: GLUCOSE

5. FACILITATED DIFFUSION (AQUAPORINS)
EX: water
ALSO CALLED OSMOSIS

6. FACILITATED DIFFUSION (Ion Channels)
EX: Ions like Ca++, Cl-, Na+, K+

7. Sodium-Potassium PUMP (Na+-K+ pump)
EX: Moves 3 Na+ out of cell & K+ into cell

8. PROTON PUMP
EX: H+ ions

9. ENDOCYTOSIS (Phagocytosis)
EX: Large particles or whole cells Used by white blood cells to destroy
bacteria

10. ENDOCYTOSIS (Pinocytosis)
EX: small molecules or fluids

11. EXOCYTOSIS
EX: anything leaving cell Used by Golgi bodies for export