Browse the glossary using this index
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Active transport the movement of substances across membranes against their concentration gradient using pumps. |
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Carrier protein a protein that binds to a molecule and transports it accross the lipid bilayer. |
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Channel protein a hydrophilic pathway in a membrane that enables water and ions to pass through. |
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Diffusion the process in which molecules move from a region of higher concentration to a region of lower concentration. |
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Dynamic equilibirum the state in which continuous action results in balanced conditions. |
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Electrochemical gradient the combined effects of a difference in electrical potential energy and a difference in the concentration gradietns of ions. |
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Endocytosis the process of import larger molecules into the cell. |
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Exocytosis the process of export larger molecues out of the cell. |
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Facilitated diffusion the facilitated transport of ions and polar molecules through a membrane via protein complexes. |
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Fluid mosaic model the idea that a biological membrane consists of a fluid phospholipid bilayer, in which proteins are embedded and float freely |
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