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Unit 3 Lesson 2

What Goes In Must Come Out

TermDefinition
active transport the movement by energy of molecules across a cell membrane from low to high concentration
aquaporins the protein channels that allow water to enter and leave a cell
cell membrane a semipermeable membrane made of a double layer of lipids that surrounds a cell
concentration gradient the gradual change in concentration of a solute in a solution
diffusion the movement of molecules from an area of higher concentration to an area of lower concentration
endocytosis taking large materials into a cell
equilibrium the concentration inside of the cell is equal to the concentration outside of a cell
exocytosis moving large materials out of a cell
facilitated diffusion the diffusion of small, hydrophilic molecules across the cell membrane that requires a protein to help transport the molecule across the cell membrane
hydrophilic water loving
hydrophobic water fearing
hypertonic a solution with higher concentration of solutes compared to another solution
hypotonic a solution with lower concentration of solutes compared to another solution
isotonic a solution with the same concentration of solutes compared to another solution
multicellular made of many cells
osmosis the diffusion of water molecules through a semipermeable membrane from higher concentration to lower concentration until equilibrium has been reached
passive transport the movement of molecules across the cell membrane without the need for energy
solute a material that is dissolved in a solvent
solution a mixture in which a solute is dissolved into a solvent
solvent a material that dissolves the solute
vesicle a small fluid filled sac within a cell
Created by: atrang
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