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26 Cards in this Set

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light microscope
moicroscope that uses a beam of light passing though one or more lenses to magnify
electron microscope
microscope that focuses a beam of electrons on an object to form enlarged items
magnification
enlargement or enlarging of an image
resolution
in microscopes, a measure of the clarity of am 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 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 protiens that encloses the cytoplasm; essential to the cells cytoplam; all called the plasma membrane
cytoplasm
the interior of a cell
cytoskeleton
cytoplasmic network of protien filaments that plays an essential role in cell movements, shape, and division
ribosome
organelle on which protiens are made
prokaryote
single celled organism without a nucleus; bacteria cell
cell wall
the structure that surrounds the cell membrane and provides support
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
nucleus
organelle that houses the DNA of eukaryotic cells
organelle
structure in eukaryotic cells that has a specialized function
cilium
in cells that one hairlike structure that in tightly packed rows that are used
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 molecule produced by a eukaryotic cell
lysosome
organelle in a eukaryotic clel that contains digestive enzymes
mitochondrion
organelle that produces much of the STP made by a eukaryotic cell
chloroplast
organelle that uses light energy to make carbohydrates from carbon dioxide
central vacuole
membrane bound cavity in plant cells used for storage