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28 terms

Biology Cellular Transport Chapter 7

Biology
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hypertonic
there is a GREATER concentration of solute molecules OUTSIDE the cell than inside
hypotonic
there is a LOWER concentration of solute molecules OUTSIDE the cell than inside
isotonic
there is the SAME concentration of solute molecules outside the cell as inside
hypo
the swelling and bursting of animal cells when water enters happens when a cell is placed in a ____________ tonic solution.
hyper
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.
solute
The substance that dissolves to make a solution is called the_______
down with the concentration gradient
during diffusion molecules tend to move_______
dynamic equillibrium
when the concentration of solute inside & outside a cell is the same, the cell has reached
osmosis
the diffusion of water across a selectively permeable membrane is called
mitochondria
energy for active transport comes from a cell's _______
active
______ 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 _________
energy
active transport requires __________ to move molecules across membranes
ATP
_____ is the molecules that provides the energy for active transport
Mitochondria
the cell organelles that burns glucose and provides ATP for active transport are the ______________
osmosis
water moves across membranes by ____________
vacuole
a small membrane sac used to transport substances during exocytosis & endocytosis_________
passive
__________ transport does NOT REQUIRE energy
isotonic
a cell placed in an ______________ solution neither swells or shrinks because the concentration of molecules outside the cell is the same as inside
hypertonic
a solution in which there is a HIGHER concentration of molecules OUTSIDE the cell than inside ____________
hypotonic
a solution in which the concentration of molecules outside the cell is LOWER than inside
down
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
endocytosis
process by which a cell takes in material by forming a vacuole
exocytosis
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
osmatic
_______ pressure is caused by water inside a plant cell pushing against the cell wall