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19 Cards in this Set
- Front
- Back
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solute
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substance is that dissolved in another substance
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solution
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homogenous mixture of two or more substances
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solvent
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liquid in which a solute is dissolved to form a solution
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concentration gradient
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difference in the concentration of a substance on two sides of a semipermeable barrier
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osmosis
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passive movement of water across is semipermeable membrane in response to a difference in solute concentration across the membrane
-one of the primary mechanisms of water transport in the body |
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osmotic pressure
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the driving force for osmosis
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isotonic
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solutions with the same solute concentration as the cytosol
-the cell will neither gain nor lose water by osmosis |
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hypotonic
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solutions having lesser solute concentration than the cytosol
-the cell will tend to gain water by osmosis and expand |
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hypertonic
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solutions having greater solute concentration than cytosol
-the cell is so great that the cell will burst |
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semipermeable membrane
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permeable to water but not solutes
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A dialysis bag with 0% sucrose will be _______ (hypertonic, isotonic, or hypotonic) when it is placed in a sucrose solution.
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hypertonic
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A dialysis bag with 10% sucrose will be _______ (hypertonic, isotonic, or hypotonic) when it is placed in a sucrose solution.
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isotonic
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A dialysis bag with 20% sucrose will be _______ (hypertonic, isotonic, or hypotonic) when it is placed in a sucrose solution.
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hypotonic
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A dialysis bag with 0% sucrose will be _______ (hypertonic, isotonic, or hypotonic) when it is placed in a water solution.
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isotonic
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A dialysis bag with 10% sucrose will be _______ (hypertonic, isotonic, or hypotonic) when it is placed in a water solution.
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hypotonic
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A dialysis bag with 20% sucrose will be _______ (hypertonic, isotonic, or hypotonic) when it is placed in a water solution.
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hypotonic
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hypotonic solution
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water moves in, cell swells
-hemolysis cell bursts |
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hypertonic solution
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water moves out, cell shrinks
-spiny appearance |
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isotonic solution
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no net movement of water
-cell volume stays constant |
