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26 Cards in this Set

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