AP Chp 3

AP Chp 3 - Term Definition Active(transport processes...

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Term: Active (transport) processes Definition: Membrane transport processes for which ATP is required. Active transport also refers specifically to solute pumping. Term: Amoeboid motion Definition: The flowing movement of the cytoplasm of a phagocyte Term: Anticodon Definition: The 3base sequence complementary to the messenger RNA (mRNA) codon Term: Apoptosis Definition: A process of controlled cellular suicide; eliminates cells that are unneeded, stressed, or aged Term: Aquaporins Definition: Transmembrane proteins that form water channels
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Term: Atrophy Definition: Reduction in size or wasting away of an organ or cell resulting from disease or lack of use Term: Cell Differention Definition: The development of specific and distinctive features in cells, from a single cell (fertilized egg) to all the specialized cells of adulthood Term: Centriole Definition: Minute body found near the nucleus of the cell; active in cell division Term: Centrosome (cell center) Definition: A region near the nucleus which contains paired organelles called centrioles Term: Cilia Definition: Tiny hairlike projections on cell surfaces that move in wavelike manner
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Term: Chromatin Definition: Structures in the nucleus that carry the hereditary factors(genes) Term: Chromosomes Definition: Bar like bodies tightly coiled chromatin; visible during cell division Term: Cleavage Definition: An early embryonic phase consisting of rapid mitotic cell divisions w/o intervening growth periods; product is a blastocyst Term: Concentration gradient Definition: The difference in the concentration of a particular substance between two different areas Term: Cytoplasm Definition: The cellular material surrounding the nucleus and enclosed by the plasma membrane
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Term: Cytoskeleton Definition: Literally cell skeleton. An elaborate series of rods running through the cystol supporting cellular structures and providing the machinery to generate various cell movement Term: Cytosol Definition: Viscous semitransparent fluid substance of cytoplasm in which other elements are suspended Term: Desmosome Definition: Cell junction composed of thickened plasma membranes joined by filaments Term: Diffusion Definition: The spreading of particles in a gas or solution with a movement toward uniform distribution of particles driven by kinetic energy Term: Electrochemical gradient Definition: The combined difference in concentration and charge; influences the distribution and direction of diffusion ions
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Term: Endoplasmic Reticulum Definition: Membranous network of tubular or
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