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14 Cards in this Set
- Front
- Back
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Diffusion |
Movement of molecules from an area of high concentration to an area of low concentration |
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Facilitated diffusion |
Process by which certain molecules diffuse quickly across the cell membrane |
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Osmosis |
The diffusion of water across a selectively permeable membrane from a region of higher water concentration to a region of low water concentration |
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Hypertonic solution |
Solution has concentration of solute is higher than that of the cell placed in it |
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Isotonic |
A solution that contains the same concentration of dissolved substances as a living cell placed in it |
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Hypotonic |
A solution that contains a lower concentration of dissolved substances than that of the cell placed in it |
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Selective permeability |
Some substances can pass through the cell membrane freely other substances can pass through some extent or at certain times and some substances that can pass through at all |
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Osmotic pressure |
Increasing pressure resulting from the flow of water in osmosis |
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Concentration gradient |
The difference in concentration between a region of higher concentration to one of lower concentration |
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Equilibrium |
A state in which all acting influences are balanced |
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Endocytosis |
The process of transporting material into the cell by means of a vesicle |
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Exocytosis |
The movement of materials out of the cell by means of reverse endocytosis |
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Pinocytosis |
The process in which liquids from the surrounding medium are taken into a cell by the formation of a vesicle |
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Phagocytosis |
Process in which large particles or small organisms are digested into the cell |
