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Cell Transport

Cell Transport. (1). Passive Transport/Diffusion. Passive Transport/Diffusion. The movement of particles from HIGH concentration to LOW concentration. Diffusion example. Passive Transport. Does NOT use energy. May go through cell membrane or protein “doorways” in the cell membrane.

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Cell Transport

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  1. Cell Transport

  2. (1) Passive Transport/Diffusion

  3. Passive Transport/Diffusion • The movement of particles from HIGH concentration to LOW concentration. Diffusion example

  4. Passive Transport • Does NOT use energy. • May go through cell membrane or protein “doorways” in the cell membrane.

  5. Example: Spraying Perfume Example: Sugar in Iced Tea

  6. Passive Transport • The molecules move from an area of high concentration to an area of low concentration • Movement does not require energy (passive transport) • The movement of larger molecules (like sugar molecules) uses a protein “doorway” to go through the membrane

  7. Passive Transport/Osmosis: The diffusion of waterOsmosis in a Cell

  8. (2) Active Transport

  9. (2) Active Transport • The movement of particles from LOW concentration to HIGH concentration.

  10. DOES use energy. • May go through proteins in the cell membrane.

  11. Bulk Transport-Active • Endocytosis- the cell membrane folds into a pouch (vesicle) that encloses the large particles

  12. Bulk Transport-Active • Exocytosis- the release of cell products and wastes from the cell

  13. Tonicity (descriptive words used to compare solutions)Water will diffuse to where there is more solute. • Hypotonic Solution - One solution has a lower concentration of solute than another. • Hypertonic Solution - one solution has a higher concentration of solute than another. • Isotonic Solution - both solutions have same concentrations of solute.

  14. Plant and Animal Cells put into various solutions

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