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S1 C5

Biology Vocab S1 C5

TermDefinition
Passive Transport Moves molecules DOWN the concentration gradient. Goes from high to low to maintain equilibrium in the cells. Doesn't require cellular energy.
Diffusion Movement of particles from an area of high concentration to an area of low concentration
Concentration Gradient The difference in the concentration of molecules across a distance
Equilibrium When the concentration of molecules are the same throughout the space that the molecules occupy
Osmosis The process by which the water diffuse across the cell membrane from an area of higher concentration to an area of lower concentration
Hypotonic When the concentration of solute molecules outside the cell is LOWER than the concentration in the cytosol
Hypertonic When the concentration of solute molecules outside the cell is HIGHER than the concentration in the cytosol
Isotonic When the concentration of solute molecules outside the cell are EQUAL than the concentration in the cytosol
Contractile Vacuole Organelles that remove water
Turgor Pressure The pressure that water molecules exert against the cell wall
Plasmolysis When the cells shrink way from the cell walls
Cytolysis The bursting of cells
Facilitated Diffusion The transport of substances through a cell membrane along a concentration with the aid carrier proteins
Carrier Protein A protein that transports substances across the cell membrane
Ion Channel A complex of protein molecules in a cell membrane that form a pore through which ions can pass
Created by: brightk19