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25 Cards in this Set
- Front
- Back
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light passes through one or more lenses to produce an englarged image of a specimen
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light microscope
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forms an image of a specimen using a beam of electrons
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electron microscope
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the ability to make an image appear larger than its actual size
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magnification
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a measure of the clarity of an image
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resolution
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uses a needle-like probe to measure differences in voltage of electrons that leak, or tunnel, from the surface of the object being viewed
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scanning tunneling microscope
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1.all living things are made of one of more cells
2. cells are the basic units of all organisms 3. all cells arise from exsisting cells |
cell theory
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outer boundary of a cell
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cell membrane
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cell interior
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cytoplasm
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microscopic fibers that structures are suspended in inside a cell
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cytoskeleton
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cellular structures on which proteins are made
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ribosomes
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single celled organism that lacks a nucleus and other internal compartments
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prokaryotic cell
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surrounds the cell membrane and provides structure and support
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cell wall
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long, threadlike structures that protrude from the cells surface and engages movement
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flagella
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organism whose cells have a nucleus
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eukaryotic cell
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internal component that houses the cells DNA
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nucleus
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structure that carries out specific activites in a cell
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organelle
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short hairlike structures that protrude from eukaryotic cells; propel some cells through envoirnment
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cilia
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lipids made of phosphates group and two fatty acids; has a polar head and 2 nonpolar tails
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phospholipids
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a double layer that the phospholipids are arranged in
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lipid bilayer
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extensive system of internal membranes that move proteins and other substances through the cell
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endoplasmic reticulum
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small, membrane-bound sac that transports substances in cell
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vesicle
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set of flattened, membrane-bound sacs that serves as the packaging and distrubution center of a cell
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golgi apparatus
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small, spherical organelles that contain the cells digestive enzymes
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lysosome
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large, membrane-bound sac that stores water in a cell
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central vacuole
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organelle that harvest energy from organice compounds to make ATP, the main energy source of cells
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mitochondrion
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