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10 Terms

1
Osmosis
The diffusion of a solvent, such as water, through a selectively permeable membrane.
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2
Aquaporins (AQPS)
Water-specific channels formed by transmembrane proteins that allow single-file diffusion of water molecules.
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3
Edema
The abnormal accumulation of fluid in tissues, leading to swelling.
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4
Osmolarity
The total concentration of all solute particles in a solution.
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5
Tonicity
The ability of a solution to change the shape or plasma membrane tension of cells by altering their internal water volume.
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6
Hydrostatic pressure
The back pressure exerted by water against the cell wall.
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7
Osmotic pressure
The tendency of water to move into a cell by osmosis.
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8
Selective permeability
The property of cell membranes that allows certain molecules to pass through while blocking others.
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9
Net diffusion
The overall movement of water and solute down their concentration gradients until equilibrium is reached.
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10
Nonpenetrating solutes
Solutes that cannot diffuse through the plasma membrane and affect water movement.
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