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CELL MEMBRANE AND TRANSPORT

AB
DIFFUSIONMovement of any type of molecule from high to low concentration until equilibrium is reached
OSMOSISDiffusion of water from high to low concentration.
TURGOR PRESSUREPressure of water against the cell membrane.
FACILITATED DIFFUSIONTransport that moves material from high to low concentration using carrier or transport protein.
ACTIVE TRANSPORTMovement of molecules from low to high concentration using carrier proteins.
ENDOCYTOSISUsed for molecules too large to enter or exit cell xit cell cell
EXOCYTOSISExporting large molecules out of the cell.
HYPERTONICA solution that has a higher concentration of solute than the cell.
HYPOTONICA solution that has a lower concentration of solute than the cell.
ISOTONICWhen the solution is the same concentration as the cell.
CONCENTRATION GRADIENTThe diffrence in concentration from one side of a membrane to the other.
TRANSPORTMovement of molecules into and out of the cell.
SEMIPERMEABLE MEMBRANEA membrane that allows some molecules through but not all of them.
VESICLESA small vacuole that carries materials throughout the cell.
HYDROPHOBICMolecules that "hate" water.
HYDROPHILICMolecules that "love" water.
PHOSPHOLIPID BILAYERThe cell membrane is made of a:
TRANSPORT PROTEINProtein that moves materials across the cell membrane.
EQUILIBRIUMWhen molecules are equal on both sides of the membrane.
CARRIER PROTEINAnother name for a transport protein that will only move one kind of material.


8th Grade Science Teacher
St. Louis School Hawaii
Honolulu, HI

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