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31 Cards in this Set
- Front
- Back
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Centriole |
Small set of microtubules. It comes in pairs and move to opposite ends of the nucleus during cell division. It helps organize microtubules during cell division. |
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Cytoplasm |
Contents of the interior portion of the cell minus the nucleus. |
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Cytoskeleton |
Network of microtubules and microfilaments that give a eukaryotic cell its shape and its capacity to arrange its organelles and to move |
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Cytosol |
Fluid portion of cytoplasm |
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Endoplasmic reticulum |
System of membranous tubes and flattened sacs found in the cytoplasm of eukaryotes. Rough ER is studded with ribosomes while smooth ER is not. |
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Rough ER |
Portion of ER that contains ribosomes. |
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Smooth ER |
Lacks ribosomes and is more tubular. |
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Nuclear envelope |
Two membranes that surround the nucleus and separate genetic material from the cytoplasm. |
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Nuclear lamina |
Network of filaments just inside the nuclear envelope that interact with chromatin and help support the envelope |
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Nuclear pore |
Perforate nuclear envelopes and connect the nucleoplasm with the cytoplasm |
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Nucleoid |
Region where DNA is located in a prokaryotic cell. |
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Nucleolus |
Region in the nucleus where ribosomes begin to assemble from RNA and proteins. |
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rRNA |
RNA that's incorporated into a ribosome. Involved in peptide bond formation. |
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Flagellum |
Contributes to the movement and adhesion of prokaryotic cells. |
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Golgi apparatus |
Structure in the endomembrane system composed of flattened membranous sacs piled up like saucers and small membrane enclosed vesicles |
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Vesicle |
Fluid or air filled cavity or sac |
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Mitochondrion |
Membrane bound organelle that harvests the chemical energy from fuel molecules in a form that the cell can use (ATP). |
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Chloroplast |
Organelle in plant cells that are the site of photosynthesis |
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Peroxisome |
Single membrane enclosed organelle that breaks down harmful peroxides. |
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Plasma membrane |
Membrane that surrounds the cell that regulates the entry and exit of molecules and ions |
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Plasmodesmata |
Cytoplasmic strands connecting two adjacent plant cells. |
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Archaea |
Unicellular, prokaryotic organism |
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Bacteria |
Unicellular, prokaryotic organism |
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Eukarya |
One of the three domains of life. Organisms made up of one or more eukaryotic cells |
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Prokaryote |
Single celled organisms whose cell contains no nucleus |
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Eukaryote |
Organisms whose cell contains a nucleus |
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The cell theory |
Important unifying principle that states that cells are the fundamental unit of life, all living organisms are composed of cells, and all cells come from preexisting cells |
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Cell wall |
Rigid structure that encloses the cells of plants, fungi, many protists, and most prokaryotes. Gives these cells shape and limits expansion. |
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Myosin |
Contractile protein of muscle |
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Actin |
Contractile protein in muscles. Makes up the cytoskeletal microfilaments in eukaryotic cells. |
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Nexin |
Protenious inter-doublet linkage that prevents microtubules in the outer layer of axonemes from movement with respect to eachother. |
