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26 Cards in this Set

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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 cell's cytoplasm; also called the plasma membrane
cytoplasm
the interior of a cell
cytoskeleton
cytoplasmic network of protein filaments that plays an essential role in cell momvement, shape, and division
cell wall
the structure that surrounds the cell membrane and provides support for the cell
cilium
in cells, one hairlike structure in tightly packed rows that are used for movement
chloroplast
organelle that uses light energy to make carbohydrates from carbon dioxide and water
central vacuole
membrane-bound cavity in plant cells used for storage
light microscope
microscope that uses a beam of light passing though one or more lenses to magnify an object
electron microscope
microscope that focuses a bean of electrons on an object to form an enlarged image
magnification
elargement 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-deminsional image of the object; can be used to study living organism
ribosome
organelle on which proteins are made
prokaryote
single-celled organism without a nucleus; bacterial cell
flagellum
threadlike structure that gros out of a cell and enables it to move
eukaryote
organisms whose cells have a nucleus enclosed by a membrane
nucleus
organelle that houses the DNA of eukaryotic cells
organelle
structure in eukaryotic cells that has a specialized function
phospolipid
lipid molecule in all membranes of a cell
lipid bilayer
foundation of cell membranes; composed of 2 layers of phospholipids
endoplasmic reticulum
cell membranes in the cytoplasm that transport substances made by the cell
vesicle
membrane-enclosed sac in a cell's membrane
Golgi apparatus
organelle that packages and distributes molecules produced by a eukaryotic cell
lysosome
organelle in eukaryotic cell that contains digestive enzymes
mitochondrion
organelle that produces much of the ATP made by a eukaryotic cell