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there is a LOWER concentration of solute molecules OUTSIDE the cell than inside


there is the SAME concentration of solute molecules outside the cell as inside


the swelling and bursting of animal cells when water enters happens when a cell is placed in a ____________ tonic solution.


The shrinking of plant cells when water leaves so the cell membrane pulls away from the cell wall or shrinking of animal cells happens when a plant celll is placed into a ________tonic solution.


The substance that dissolves to make a solution is called the_______

down with the concentration gradient

during diffusion molecules tend to move_______

dynamic equillibrium



the diffusion of water across a selectively permeable membrane is called


energy for active transport comes from a cell's _______


______ transport requires energy from ATP to move substances across membranes

an area of high concentration to an area of lower concentration

when molecules move DOWN the concentration gradient it means they're moving from _________


active transport requires __________ to move molecules across membranes


_____ is the molecules that provides the energy for active transport


the cell organelles that burns glucose and provides ATP for active transport are the ______________


water moves across membranes by ____________


a small membrane sac used to transport substances during exocytosis & endocytosis_________


__________ transport does NOT REQUIRE energy


a cell placed in an ______________ solution neither swells or shrinks because the concentration of molecules outside the cell is the same as inside


a solution in which there is a HIGHER concentration of molecules OUTSIDE the cell than inside ____________


a solution in which the concentration of molecules outside the cell is LOWER than inside


when molecules move form high to low along a concentration gradient we say they are moving ________ the gradient

faciliated diffusion

a form of passive transport that uses transport proteins


process by which a cell takes in material by forming a vacuole


process by which a cell expels wastes from a vacuole

protein ion pump

transport protein that changes shape when a particle binds with it

channel protein

transport protein that provides a tubelike opening in the plasma membrane through which particles can diffuse


_______ pressure is caused by water inside a plant cell pushing against the cell wall

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