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Osmosis

TermDefinition
Diffusion The movement of [gas or liquid] molecules from a region of higher concentration to a region of lower concentration
Osmosis The movement of water molecules from a hypotonic solution to a hypertonic solution across a S.P.M selectively permeable membrane
Turgor The state of fullness in a plant cell due to the intake of water
Turgor Pressure state of a plant cell due to forces built up in the cell due to incoming water
Hypotonic a solution with a lower solute concentration[more dilute] than the surrounding solution.
Hypertonic a solution with a higher solute concentration than the surrounding solution
Isotonic a solution with the same solute concentration as another solution
Semi Permeable Membrane a barrier that allows certain molecules [or ions] to pass through but not others, depending on size,
Impermeable membrane a barrier that cannot be penetrated by particles of solids or liquids
permeable membrane a barrier that allows all molecules [and ions] to pass through irrespective of size
Passive transport movement of substances across the cell membrane which does not involve the use of energy by the cell
Active transport movement of substances across the cell membrane which does involve the use of energy by the cell
Plasmolysis the shrinking of the cell membrane away from the cell wall with the loss of turgidity as a result of water being drawn out of the cell by osmosis.
 

 



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