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Cytoskeleton

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The cytoplasmic network of protein filaments that plays an essential role in cell movement, shape, and division.

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Mitochondrion

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In eukaryotic cells, the organelle that is the site of cellular respiration, which releases energy for use by the cell.

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Ribosome

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A cell organelle composed of RNA and protein; the site of protein synthesis.

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Endoplasmic Reticulum

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A system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids.

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Golgi Complex

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A cell organelle that helps make and package materials to be transported out of the cell.

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Cell Wall

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A rigid structure that surrounds the cell membrane and provides support to the cell.

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Vacuole

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A fluid-filled vesicle found in the cytoplasm of plant cells or protozoans.

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Chloroplast

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An organelle found in plant and algae cells where photosynthesis occurs.