Term
| two layer "sandwich" of molecules that surround a cell |
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Definition
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Term
| Net movement of the particles of a substance from where they are more concentrated to where they are less concentrated |
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| Point at which the number of diffusing molecules moving in one direction is equal to the number moving in the opposite direction |
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Term
| membrane that allows some substances to pass, but not others |
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Definition
| selectively permeable membrane |
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Term
| Having a higher concentration of solute than another solution |
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Term
| Having a lower concentration of solute than another solution |
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| having a solute concentration equal to that of another solution |
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| Movement of molecules across a membrane requiring energy to be expended by the cell |
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| diffusion across a membrane that does not require energy to be expended by the cell |
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Term
| a small, membrane-bound sac that functions in moving products into, out of, and within a cell |
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| pathway provided by transport proteins that helps certain molecules pass through a membrane |
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Term
| the process of exporting proteins from a cell by a vesicle fusing with the plasma membrane |
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| process of taking material into a cell within vesicles that bud inward from the plasma membrane |
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Term
| passive transport of water across a selectively permeable membrane |
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| double membrane that surrounds a cell nucleus |
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| ball-like mass of fibers and granules in a cell nucleus |
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Term
| cluster of proteins and nucleic acids that construct proteins in a cell |
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Definition
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Term
| network of membranes within a cell's cytoplasm that produce a variety of molecules |
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Term
| Cellular organelle that modifies, stores, and routes cell products |
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Term
| membrane-bound sac that buds from endoplasmic reticulum or the Golgi apparatus |
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Term
| membrane-bound sac that contains digestive enzymes that can break down proteins, nucleic acids, and polysaccharides |
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Term
| organelle found in some plant cells and certain unicellular organisms where photosynthesis takes place |
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| cellular organelles where cellular respiration occurs |
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| main energy source that cells use for most of their work |
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