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Science
Cellular Eating, Drinking, and Transport
19
Science
9th Grade
10/25/2007

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Term
channels
Definition
_______ are for passive transport.
Term
semipermeable
Definition
the cell membrane is________ and lets certain chemicals in and keeps certain chemicals out.
Term
protein
Definition
channels and pumps are both folded_______ imbessed in the phospholipid bilayer
Term
down
Definition
the facilitated-diffusion channel allows a direct path for chemicals to travel_______ their gradients.
Term
higher -> lower (H->L)
Definition
substances moving from a region of________ concentration to_______ concentration are moving DOWN a gradient.
Term
energy
Definition
moving UP a gradient takes more energy than moving DOWN a gradient.
Term
aniport
Definition
trade substance in opposite directions.
Term
symport
Definition
move 2 substances in the same direction.
Term
opposite
Definition
pumps go in the_______ direction of the natural gradient.
Term
sodium
Definition
three_______ ions are pumped out of the cell.
Term
potassium
Definition
only two________ ions flow inward.
Term
ATP
Definition
energy for going against the gradient is supplied by_______.
Term
big
Definition
endocytosis is the way a cell takes in the________ stuff it needs.
Term
small
Definition
channels and pumps transport only_______ things like ions and small molecules.
Term
eating
Definition
phagocytosis or cellular_______.
Term
drinking
Definition
pinocytosis or cellular_______.
Term
pit
Definition
receptor-mediated endocytosis which forms a coated_______ and then a vesicle.
Term
exocytosis
Definition
excreting or removing larger particles is called_______.
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