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| Generalization that all living things are composed of cells, and that cells are the baisic unit of structure and function in living things |
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| photograph of the veiw through a microscope |
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| part of a cell with a specific function |
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| thin outer boundary of a cell that regulates the traffic of chemicals betweeen the cell and its surroundings |
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| the part of a cell that houses the cells genetic material in the form of DNA |
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| Reigion of a cell between the Nucleus and the Plasma Membrane. |
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| Strong wall outside a plant cell's plasma membrane that protects the cell and maintains its shape |
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| cell lacking a nucleus and most other organelles |
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| cell with a nucleus (surrounded by its own membrane) and other internal organelles |
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| two layered "sandwich" of molecules that surround a cell |
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| 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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| Selectively Permeadle Membrane |
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Definition
| Membrane that allows some substances to pass more easily than others and blocks the passage of some substances all together |
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| diffusion across a membrane requireing only the random motion of molecules with no energy expended by the cell |
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| pathway provided by transport proteins that helps certain molecules pass through a membrane |
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| passive transport of water across a selectively permeable membrane |
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| having a higher concentration of solute than another solution |
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| 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 a cell |
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| small membrane bound sac that functions in moving products into out of and within a cell |
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| 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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| double membrane that surrounds a cells nucleus |
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| ball like mass of fibers and granules in a cell nucleus |
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| cluster of proteins and nucleic acids that constructs proteins in a cell |
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| Endoplasmic Reticulum (ER) |
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Definition
| network of membranes within a cells cytoplasm that produce a variety of molecules |
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| cellular organelle that modifies stores and routes cell products |
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| membrane bound sac that buds from the endoplasmic recticulum or the golgi apparatus |
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| membrane bound sac containing digestive enzymes that can break down proteins nucleic acids and polysaccharides |
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| organelle found in most plant cells and certain unicellular organisms where photosynthesis takes place |
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| cellular organelles where cellular resperation occurs |
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| main energy source that cells use for most of their work |
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| straight hollow tube of proteins that gives rigidity shape and organization into a cell |
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| solid rod of protein thinner than a microtubule that enables a cell to move or change shape |
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| long thin whip like structures with a core of microtubules that enable some cells to move |
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| short structures projecting from a cell and containing bundels of microtubules that move a cell through its surroundings or move fluid over the cells surface |
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