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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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Passive transport diffusion

(1)

Passive Transport/Diffusion


Passive transport diffusion1
Passive Transport/Diffusion

  • The movement of particles from HIGH concentration to LOW concentration.

    Diffusion example


Passive transport
Passive Transport

  • Does NOT use energy.

  • May go through cell membrane or protein “doorways” in the cell membrane.


Example: Spraying Perfume

Example: Sugar in Iced Tea


Passive transport1
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


Passive transport osmosis the diffusion of water osmosis in a cell
Passive Transport/Osmosis: The diffusion of waterOsmosis in a Cell


Active transport

(2)

Active Transport


Active transport1

(2)

Active Transport

  • The movement of particles from LOW concentration to HIGH concentration.


  • DOES use energy.

  • May go through proteins in the cell membrane.


Bulk transport active
Bulk Transport-Active

  • Endocytosis- the cell membrane folds into a pouch (vesicle) that encloses the large particles


Bulk transport active1
Bulk Transport-Active

  • Exocytosis- the release of cell products and wastes from the cell


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.


Plant and Animal Cells put into various solutions


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