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| The cell's outer boundary that covers a cell's surface and acts as a barrier between the inside and the outside of a cell. All materials enter or exit through the plasma membrane. |
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| The region of the cell that is within the plasma membrane and that includes the fluid, the cytoskeletion, and all of the organelles except the nucleus. |
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| organisms that lack a membrane-bound nucleus and membrane-bound-bound organelles. And holds their genetic information in the nucleoid. |
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| Organisms made up of one or more cells that have a nucleus and membrane-bound organelles. |
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| organelles made of protein and RNA that direct protein synthesis in the cytoplasm. |
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| tiny organelles that transfer energy from organic molecules to ATP. |
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| a system of membranous tubes and sacs that functions primarily as an intracellular highway, a path along which molecules moce from one part of the cell to another. |
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| a system of flattened, membranous sacs that modifies many cellular products and prepares them for export. |
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| small, spherically shaped sacs that are surrounded by a single membrane and that ar classidied by their contents. |
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| rigid layer that lies outside the cell's plasma membrane. |
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| a large, fluid-filled organelle that stores not only water but also enzymes, metabolic wastes, and other materials. |
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| houses and protects the cell's genetic information and is filled with a jallylike liquid called the nucleoplasm. |
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