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13 Cards in this Set
- Front
- Back
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____ states that molecules tend to move from areas of higher chemical potential to areas of lower chemical potential.
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law of diffusion
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a measure of free energy available to do the work of moving a mole of molecules from one location to another and, in some cases, through a barrier such as a cell membrane is called ______.
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chemical potential
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the movement of water across a membrane regions of higher water potential to areas of lower water potential is ____.
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osmosis
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A measure of the chemical potential, or free energy per mole, of water molecules.
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Water potential
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the jiggling of minute particles suspended in water.
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Brownian movement
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When molecules move down concentration or free-energy gradients.
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passive transport
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molecules moving against a gradient. Requires energy.
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active transport
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The cell membrane is a _______ membrane.
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Selectively permeable
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_______ is the measure of the tendency for water to move into a solution.
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Osmotic potential
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If two solutions, separated by a semipermeable membrane, have identical osmotic potentials, they are ______.
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Isotonic
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If they are not isotonic, then the solution with the greater concentration of solute is ________.
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Hypertonic
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A solution that is _____ has fewer solute particles then the solution to which it is compared.
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Hypotonic
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When osmotic pressure is exerted against the walls of the cell, it is called ________.
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Turgor pressure
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