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Plasma Membrane
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Separates cell contents from the surrounding environment
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Cytoplasm
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Fluid that contains cell contents; major site of most activities carried out by the cell
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Cytosol
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Fluid that contains cell contents
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Nucleus
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Contains genetic materials "genes', "control center of the cell"
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Nuclear envelope
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Boundary for the nucleus
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Nuclear pores
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Permit easy passage of protein and RNA molecules
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Chromatin
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Coils and condenses into chromosomes when dividing to form daugter cells
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Nucleolus
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Site ribosome subunit manufacture
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Centrioles
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Direct the formation of the mitotic spindle during cell division; form the bases of cilia and flagella
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Mitochondria
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"powerhouse of the cell" contain enzymes that oxidize foodstuffs to produce cellular energy (ATP).
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Golgi apparatus
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Plays a role in packaging proteins or other substances for export and from the cell or incorporation into the plasma membrane and in packaging lysosomal enzymes.
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Smooth endoplasmic reticulum
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Abundant in cells that produce steriod-based hormones and that are active in lipid metabolism and during drug detoxification activities
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Rough endoplasmic reticulum
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Modify, store, and dispatch new formed proteins; involved in phosolipid and cholesterol synthesis
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Ribosomes
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Actual sites of protein synthesis
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Lysosome
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To digest worn-out cell organelles and foreign substances
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