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26 Cards in this Set
- Front
- Back
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light microscope
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moicroscope that uses a beam of light passing though one or more lenses to magnify
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electron microscope
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microscope that focuses a beam of electrons on an object to form enlarged items
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magnification
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enlargement or enlarging of an image
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resolution
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in microscopes, a measure of the clarity of am image
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scanning tunneling microscope
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microscope that measures differences in voltage of electrons leaving the surface of an object and creates a three dimensional image of object; can be used to study living organisms
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cell theory
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principle that states all organisms are made of one or more cells that arise from other cells
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cell membrane
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lipid bilayer with embedded protiens that encloses the cytoplasm; essential to the cells cytoplam; all called the plasma membrane
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cytoplasm
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the interior of a cell
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cytoskeleton
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cytoplasmic network of protien filaments that plays an essential role in cell movements, shape, and division
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ribosome
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organelle on which protiens are made
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prokaryote
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single celled organism without a nucleus; bacteria cell
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cell wall
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the structure that surrounds the cell membrane and provides support
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flagellum
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threadlike structure that grows out of a cell and enables it to move
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eukaryote
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organism whose cells have a nucleus enclosed by a membrane
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nucleus
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organelle that houses the DNA of eukaryotic cells
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organelle
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structure in eukaryotic cells that has a specialized function
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cilium
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in cells that one hairlike structure that in tightly packed rows that are used
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phospholipids
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lipid molecule in all membranes of a cell
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lipid bilayer
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foundation of a cell membranes, composed of two layers of phospholipids
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endoplasmic reticulum
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cell membranes in the cytoplasm that transport substances made by the cell
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vesicle
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membrane enclosed sac in a cells interior
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golgi apparatus
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organelle that packages and distributes molecule produced by a eukaryotic cell
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lysosome
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organelle in a eukaryotic clel that contains digestive enzymes
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mitochondrion
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organelle that produces much of the STP made by a eukaryotic cell
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chloroplast
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organelle that uses light energy to make carbohydrates from carbon dioxide
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central vacuole
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membrane bound cavity in plant cells used for storage
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