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        | A major theory of life science that (1)all organisms consist of cells (2)cells are basic units of structure & function in organisms (3)all cells come from other cells |  | 
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        | The selectively permeable outer boundary of a cell that allows for food & oxygen to move into the cell and wastes to leave it |  | 
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        | A rigid structure made of cellulose that surrounds a plant cell membrane to support & protect it |  | 
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        | A plant cell organelle in which light energy is changed into chemical energy in the form of sugar during the process of photosynthesis |  | 
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        | Long strands of DNA in a cell's nucleus |  | 
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        | compound light microscope |  | Definition 
 
        | An instrument that uses lenses to magnify objects |  | 
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        | The fluid material inside the cell membrane that contains structures that carry out life processes |  | 
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        | An instrument using beams of electrons that magnifies objects too small to be seen with a light microscope |  | 
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        | A cell organelle consisting of folded membranes that move materials around within the cell |  | 
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        | Cell organelles consisting of stacks of membrane covered sacs that pinch off & move proteins to the outside of the cell |  | 
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        | An organelle with chemicals that digest waste and worn out cell parts |  | 
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        | A cell organelle that breaks down food molecules and releases energy |  | 
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        | A structure inside a cell that directs the cell's activities |  | 
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        | A structure made up of different types of tissues that work together to do a specific job |  | 
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        | Membrane bound structures within the cytoplasm of eukaryotic cells. Organelles break down food, move wastes and store materials |  | 
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        | A group of organs working together for a specific job. For example, the digestive system |  | 
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        | A process whereby the immune system attacks a transplanted organ |  | 
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        | A cell organelle on which protein is made |  | 
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        | Similar cells that do the same sort of work; for example, all muscle tissue contracts |  | 
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        | A storage area in a cell for water, food or waste products |  | 
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