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| Double membrane enclosing the nucleus; perforated by pores; continuous with ER |
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| Nonmembranous organelle involved in the production of ribosomes; a nucleus has one or more nucleoli |
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| Material consisting of DNA and proteins; visible as individual chromosomes in a dividing cell |
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| Membrane enclosing the cell |
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| Nonmembranous organelles (small brown dots) that make proteins; free in cytoplasm or bound to rough ER or nuclear envelope |
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| Organelle active in synthesis, modification, sorting, and secretion of cell products |
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| Digestive organelle where macromolecules are hydrolyzed (Animal Cells only) |
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| Organelle where cellular respiration occurs and most ATP is generated |
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| Organelle with various specialized metabolic functions; produces hydrogen peroxide |
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| Projections that increase the cell's surface area |
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| Reinforces cell's shape, functions, in cell movement; components are made of protein |
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| Region where cell's microtubules are initiated; in an animal cell, contains a pair of centrioles (function unknown); centrioles absent in plant cells |
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| Locomotion organelle present in some animal cells; composed of membrane-enclosed microtubules (animal cells only, some plant sperm) |
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| Network of membranous sacs and tubes; active in membrane synthesis and other synthetic and metabolic processes; has rough (ribosome-studded_ and smooth regions |
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| Prominent organelle in older plant cells; functions include storage, breakdown of waste products, hydrolysis of macromolecules, enlargement of vacuole is a major mechanism of plant growth (plant cells only) |
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| Photosynthetic organelle; converts energy of sunlight to chemical energy stored sugar molecules (plant cells only) |
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| Channels through cell walls that connect the cytoplasms of adjacent cells (plant cells only) |
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| Outer layer that maintains cell's shape and protects cell from mechanical damage; made of cellulose, other polysaccharides and protein (plant cells only) |
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