TRANSPORT ACROSS MEMBRANES

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Presentation transcript:

TRANSPORT ACROSS MEMBRANES KEY CARD TRANSPORT ACROSS MEMBRANES

KEY CARD ACTIVE PASSIVE NO HELPER MEMBRANE PROTEIN VESICLE

DIFFUSION EX: Oxygen & Carbon dioxide

FACILITATED DIFFUSION (Carrier proteins) EX: GLUCOSE

FACILITATED DIFFUSION (AQUAPORINS) EX: water ALSO CALLED OSMOSIS

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

Sodium-Potassium PUMP (Na+-K+ pump) EX: Moves 3 Na+ out of cell & 2 K+ into cell

PROTON PUMP EX: H+ ions

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

ENDOCYTOSIS (Pinocytosis) EX: small molecules or fluids

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