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AP Biology - Cell Cycle Flashcards

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6237829712G1 PhasePrimary growth phase of the cell0
6237829713S PhasePhase where genome is replicated1
6237829714G2 PhasePreparation made for separation of genomes; organelles replicate, chromosomes condense, microtubules assemble2
6237829715InterphaseCollective name for G1, S, and G2 Phases3
6237829716Mitosis (M)Phase where microtubules pull sister chromatids apart4
6237829717Cytokinesis (C)Cytoplasm divides; forms 2 daughter cells; occurs concurrently with final phase of mitosis5
6237829718Sister ChromatidsThe two identical copies formed by the replication of a single chromosome, joined by centromere6
6237829719CentromereLinks sister chromatids7
6237829720KinetochoreProtein disk bound to specific DNA sequence at centromere8
6237829721Mitotic PhaseIncludes both mitosis and cytokinesis9
6237829722Mitotic SpindleConsists of fibers made of microtubules and associated proteins10
6237829723CentrosomeSubcellular region containing material that functions through the cell cycle to organize the cell's microtubules; contains MTOC; only found in animal cells11
6237829724ProphaseChromatin fibers condense into chromosomes, mitotic spindle begins to form, centromeres move away from each other12
6237829725PrometaphaseNuclear envelope fragments, Each of the two chromatids now has kinetochore, some microtubules attach to kinetochores13
6237829726MetaphaseCentrosomes at opposite poles of the cell, Chromosomes convene at metaphase plate14
6237829727AnaphaseBeginning when sister chromatids separate from each other and ending when a complete set of daughter chromosomes have arrived at each of the two poles of the cell15
6237829728TelophaseTwo daughter nuclei form in the cell, nuclear envelope forms16
6237829729G1 CheckpointMost important checkpoint; if cell receives go-ahead signal, the the cell continues with the cell; in the absence of the go-ahead signal, cell exits the cell cycle and enter the G0 phase17
6237829730M CheckpointCell in mitosis receives a stop signal when any of its chromosomes are not attached to spindle fibers18
6237891007Microtubule Organizing Center (MTOC)Structure found in all eukaryotic cells; source of all microtubules19

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