| Term 
 | Definition 
 
        | external boundary of cell; regulates flow of materials into and out of the cell; site of cell signaling |  | 
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        | Term 
 | Definition 
 
        | contains digestive enzymes of many varieties; "suicide sac" of the cell |  | 
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        | Term 
 | Definition 
 
        | scattered throughout the cell; major site of ATP synthesis |  | 
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        | Term 
 | Definition 
 
        | slender extensions of the plasma membrane that increase its surface area |  | 
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        | Term 
 | Definition 
 
        | stored glycogen granules, crystals, pigments; present in some cell types |  | 
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        | Term 
 | Definition 
 
        | membranous system consisting of flattened sacs and vesicles; packages proteins for export |  | 
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        | Term 
 | Definition 
 
        | control center of the cell; necessary for cell division and cell life |  | 
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        | Term 
 | Definition 
 
        | two rod-shaped bodies near the nucleus; associated with the formation of mitotic spindle |  | 
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        | Term 
 | Definition 
 
        | dense nuclear body; packaging site for ribosomes |  | 
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        | Term 
 | Definition 
 
        | contractile elements of thw cytoskeleton |  | 
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        | Term 
 
        | Rough ER (endoplasmic reticulum) |  | Definition 
 
        | membranous tubules covered with ribosomes; involved in intracellular tansport of proteins |  | 
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        | Term 
 | Definition 
 
        | attached to membrane systems or scattered in the stoplasm; site of protein synthesis |  | 
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        | Term 
 | Definition 
 
        | threadlike structures in the nucleus; contain genetic material (DNA) |  | 
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        | Term 
 | Definition 
 
        | site of free radical detoxification |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | chromatin coils and condenses, forming chromosomes. The nuclear envelope fragments. The mitotic spindle forms. Chromesomes first appear to be duplex structures. Cleavage furrow forms. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | the chromosomes are V shaped. The nuclear envelope is completely absent |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | the nuclear envelope reforms. Chromosomes stop moving toward the poles. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | chromosomes line up in the center of the cell. The nuclear envelope is completely absent. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | DNA replication occurs. Centrioles replicate. |  | 
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