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Passive Transport Mechanisms
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diffusion,facilitated diffusion,osmosis,filtration
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Passive Transport Mechanisms
diffusion,facilitated diffusion,osmosis,filtration
Diffusion
Movement of a substance from an area of high concentration to an areaof low concentration
Facilitated diffusion
A helper molecule within the membrane assissts the movement of substance from an area of high concentration to an area of low concentration
Osmosis
Movement of water (solvent)from an area with more water to an area with less
Filtration
movement of watr and dissolved substance from an area of high pressure to an area of low pressure: the water and dissolved substance are pushed
Tonicity
The ability of a solution to affect the volume and pressure in a cell.
Active transport pump
Movement of a substance uphill(from an area of low concentration to an area of hight concentration) Require ATP
Endocytosis
Taking in ingesstion of substance by cell membrane
Phagocytosis
Engulfing of solid particles by the cell membrane(cellullar eating)
Pinocytosis
Cellullar drinking
Exocytosis
Secretion of cellular products (protein, debris) out of the cell
Isotonic
Same concentration as intercellular fluid
Hypotonic
Where there is more water to where there is less-pure water , being more dilute than the inside of the cell - cause RBC's to burst or lyse
hemolysis
burst or lyse
hypertonic
Very concentration salt solution, water diffuse out of the RBC into the bathing solution - causes shrink or crenate
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