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Ap bio unit 4

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TermDefinition
ligand signal molecule
Transduction conversion of one form of energy into another
secondary messenger non-protein
cyclic AMP second messenger 1/3 ATP
reason different responces from different signals relay molecules
transcription factors Turns on or off genes
Cytokinesis in animal cells cleavage
binary fission A form of asexual reproduction in which one cell divides to form two identical cells.
density-dependent inhibition crowded cells stop dividing
anchorage dependence The requirement that to divide, a cell must be attached to a solid surface.
metastasis The spread of cancer cells beyond their original site
anaphase chromosomes separate and move to opposite ends of the cell
Telephase spindle fibers disassemble and membrane forms around chromosomes
Prophase nucleolus disappears and chromatids coil together
Prometaphase kinetochore of chromatids attached to spindle
Asters Microtubules and fibers that radiate out from the centrioles.
Created by: jaydenko
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