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9 Cards in this Set
- Front
- Back
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What processes use the concentration gradient and no energy? |
Passive processes |
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What is the concentration gradient? |
The difference of substance concentration in one place and another (high to low) |
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What is diffusion? |
The movement of molecules from a high concentration to a low concentration. |
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What is osmosis? |
The diffusion of water across a membrane. (high -> low) |
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What is osmotic pressure? |
The pressure generated by osmosis |
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Define tonicity |
The relative concentration of a solute vs. solvent in fluids that causes the movement of fluids in a and out of a cell. |
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What would an isotonic cell look like? |
It would be normal because the solute concentration is the same inside and outside of the cell. |
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What would a hypertonic cell look like? |
It would be swollen because there is a lower solute concentration outside of the cell |
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What would a hypertonic cell look like? |
It would be shrivelled because there is a high solute concentration outside the cell. |
