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Definition
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Term
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Definition
| the functional and structural unit of life |
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Definition
| all the living substances within a cell |
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Definition
| the theory that all living organisms are made up of microscopic units called cells |
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unicellular organisms
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Definition
| an organism that consists of only one cell |
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multicellular organisms
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Definition
| an organism that consists of more than one cell |
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colonial organism
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Definition
| an organism that consists of a group of similar organisms living together. Each cell functions like a unicellular organism |
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Definition
| many similar cells grouped together to perform a similar function |
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Definition
| tissues grouped together to perform a specific function |
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Definition
| a group of organs that work together to accomplish life functions |
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Definition
| the connections betweeen the cells formed during chemical interaction |
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Definition
| tiny passageways in plant cells that the cytoplasm is connected by |
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Definition
| a cell that possesses both organelles and a nucleus that is surrounded by a nuclear membrane |
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Definition
| specialized structure within a cell that performs a specific function |
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Definition
| a cell that lacks a nuclear membrane and has only indistinct organelles; found in kingdoms Archaebacteria and Eubacteria |
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Definition
| the cellular membrane that forms the outermost boundary of a cell's cytoplasm and also encloses the membrane-bound organelles within the cell |
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Definition
| a model describing cellular membranes as being composed of a lipid bilayer with proteins scattered throughout the membrane |
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Definition
| a rigid structure manufactured by the cell; located out side the plasma membrane; often made of cellulose, silica, or other substances |
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Definition
| a cellular secretion surrounding certain algae and bacteria |
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Definition
| all the material inside the plasma membrame of a cell, excluding the nucleus |
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Definition
| the colloid portion of the cytoplasm |
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Definition
| membrane-bound cellular organelles responsible for the respiration of foods to release useable energy |
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Definition
| the folds of the inner membrane of the mitochondria;contain enzymes necessary for cellular respiration |
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Definition
| a non-membrane-bound cellular organelle associated with protein formation |
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Definition
| a cellular structure consisting of a complex network of fine branching tubules |
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Definition
| a membrane-bound organelle that deals with synthesis and packaging of materials |
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Definition
| a membrane-bound organelle that contains various hydrolytic enzymes |
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Definition
| the internal structure of cytoplasm; made of microfilaments and microtubules |
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Definition
| an area near the nucleus of a cell that functions in the production of microtubules |
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Definition
| a long tubular extension of a cell's plasma membrane that aids in movement |
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Definition
| one of numerous short extentions of a cell's plasma membrane; aids in movement |
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Definition
| thr action-controlling structure at the base of a cilium or flagellum |
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Definition
| hollow, spiral assembly of protein molecules that compose flagella, cilia, mitotic spindles, and other cellular structures |
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Definition
| an organelle composed of microtubules and located near the nucleus; doubles before cell division to establish the poles |
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Definition
| form a network throughout the cytoplasm and the nucleus |
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Definition
| the thinnest of the cytoskeleton elements |
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Definition
| membrane bound organelles in plants; not animals |
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Definition
| a green organelle in which light energy is converted into organic compounds |
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Definition
| a complex system of flattened sacs |
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Definition
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Definition
| membranebound organelle in a cell |
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Definition
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Definition
| the added pressue within a plant cell that results from the movement of water into the central vacuole |
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Definition
| the positively charged central potion of an atom |
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Definition
| the double membrane forming the surface of the nucleus in eukaryotic cells |
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Definition
| openings in the nuclear envelope |
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Definition
| a complex of DNA and surrounding proteins in the nucleus of a cell |
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Definition
dark-staining spherical structure found in most cells
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