Protein Pump Exocytosis Endocytosis

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Presentation transcript:

Protein Pump Exocytosis Endocytosis Active Transport Protein Pump Exocytosis Endocytosis

copyright cmassengale CELL TRANSPORT Passive Transport Diffusion Osmosis Hypotonic Hypertonic Isotonic Facilitated Diffusion Protein Channel Active Transport Protein Pump (Sodium/Potassium) Exocytosis Endocytosis Pinocytosis Phagocytosis copyright cmassengale

Active Transport Requires Energy (ATP) BECAUSE molecules are being FORCED from LOW concentration to HIGH concentration 3 Types: Protein Pump Exocytosis Endocytosis

Protein Pump Forces small molecules and ions against the concentration gradient Low to High concentration Requires Energy (ATP) Different from Protein Channel & Facilitated Diffusion Example = Sodium-Potassium Pump

Video http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_the_sodium_potassium_pump_works.html

Exocytosis Releasing Materials OUT of the Cell using vesicles Example: Proteins packaged by the Golgi

Bringing Materials INTO the Cell 2 Types: Pinocytosis & Phagocytosis Endocytosis Bringing Materials INTO the Cell 2 Types: Pinocytosis & Phagocytosis

Bringing FLUID INTO the Cell using vesicles (mini-membranes) Pinocytosis (Endo) Bringing FLUID INTO the Cell using vesicles (mini-membranes) “Cell Drinking”

Phagocytosis (Endo) Bringing large SOLIDS (food, bacteria, etc.) INTO the Cell using vesicles (mini-membranes) “Cell Eating”

White Blood Cell Chasing Bacteria Videos: Amoeba Feeding http://www.youtube.com/watch?NR=1&v=aWItglvTiLc White Blood Cell Chasing Bacteria http://www.youtube.com/watch?v=KxTYyNEbVU4&feature=related