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ACTIVE TRANSPORT: Transport of Large molecules using energy

ACTIVE TRANSPORT: Transport of Large molecules using energy. ATP. Active Transport. Requires energy or ATP Can move materials from LOW to HIGH concentration AGAINST concentration gradient. ACTIVE TRANSPORT EXAMPLE #1:.

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ACTIVE TRANSPORT: Transport of Large molecules using energy

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  1. ACTIVE TRANSPORT:Transport of Large molecules using energy ATP

  2. Active Transport • Requires energy or ATP • Can move materials from LOW to HIGH concentration • AGAINST concentration gradient

  3. ACTIVE TRANSPORT EXAMPLE #1: Proteinscan pump molecules against the concentration gradient (flow). The protein uses ATP energy to push the molecules where the cell NEEDS them to be, regardless of the concentration. Label the protein pump on your cell membrane!

  4. ACTIVE TRANSPORT EXAMPLE #2: ENDOCYTOSIS Very large or bulk material (a lot at once) can be moved INTO the cell by a process called ENDOCYTOSIS. “en” like “enter” There are two forms: PHAGOCYTOSIS PINOCYTOSIS

  5. Endocytosis – Phagocytosis Used toengulf large items (biomolecules or pathogens) or bulk by creating a vesicle. Called“Cell Eating”

  6. Phagocytosis- Captureof aYeastCell (yellow) by membrane extensions of anImmune System Cell, or white blood cell(blue)

  7. Endocytosis – Pinocytosis Used toengulf large amounts of liquid by creating a vesicle. Called“Cell drinking”

  8. ACTIVE TRANSPORT EXAMPLE #2: EXOCYTOSIS Very large or bulk material (a lot at once) can be moved OUT the cell by a process called EXOCYTOSIS. “ex” like “exit”

  9. Moving the “Big Stuff” Exocytosis- moving things out. Molecules aremoved outof the cell byvesicles that fusewith the plasma membrane. This is how manyhormonesare secreted and hownerve cellscommunicate with one another.

  10. Exocytosis Exocytic vesicle immediately after fusion with plasma membrane.

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