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Cells
n/a
19
Biology
10th Grade
03/22/2012

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Term
Hypotonic
Definition
There s a lowere concentration of solute molecules outside the cell then inside
Term
Hypertonic
Definition
thre is a greater concentration of solute molecules outside the cell then inside
Term
Isotonic
Definition
thre is the same concentration of solute molecules outside the cell as inside
Term
Turgor Pressure
Definition
the pressure inside a plant cell casued by pushing against the cell wall
Term
Hydrophobic Tails
Definition
hate water
Term
Hydrophilic Heads
Definition
Like water
Term
Diffusion
Definition

high to low movement from one side to another, use passive transport-no energy

ex. like a fart

Term
Osmosis
Definition
passive transport of water across membrane-diffusion of water
Term
Faciliated Diffusion
Definition
use of proteins to carry polar molecules or ions across
Term
Active Transport
Definition
requires energy to transport molecules against a concentration gradient, cells use enrgy(ATP) to move large molecules or ions thru a cell membrane, moved uphill-opposite direction or diffusion
Term
Solutions
Definition
made of solute and a solvent
Term
Solvent
Definition
the liquid into which the solute is poured adn dissolved
Term
Solute
Definition
substance the is dissolved or put into the solvent. Salt and sucrose are solutes
Term
Selectively Permeable
Definition
the membrane dicides what can go in and out, not everything can pass through
Term
Concentration Gradient
Definition
the gradual difference in concentratin of a dissolved substance in a solution between a region of high density and one of lower density
Term
Endocytosis
Definition
Vesicles bud inward, getting rid of stuff
Term
Phagocytosis
Definition
eating huge particles mostly bacteria
Term
pinocytosis
Definition
Cells actively engulf large quantities of fluid(water)
Term
Exocytosis
Definition
Large molecules, vesicles form and fuse to the plasma membrane and spills its contents out
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