Cell Transport.

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Presentation transcript:

Cell Transport

Passive Transport/Diffusion (1) Passive Transport/Diffusion

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

Does NOT use energy. May go through cell membrane or proteins in the cell membrane.

Example: Spraying Perfume Example: Sugar in Iced Tea

Facilitated Diffusion 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 membrane protein to go through the membrane

Passive Transport/Osmosis: The diffusion of water Osmosis in a Cell

(2) Active Transport

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

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

Isotonic Solution - both solutions have same concentrations of solute. 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