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AP Biology Chapter 12 (The Cell Cycle- written by Campbell) Flashcards

cell division

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463057402the process in reproduction and growth by which a cell divides to form daughter cellscell division
463057403the ordering of genes in a haploid set of chromosomes of a particular organismgenome
463057404a form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same sizebinary fission
463057405any of the cells of a plant or animal except the reproductive cellssomatic cell
463057406threadlike structures made of DNA molecules that contain the geneschromosomes
463057407the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteinschromatin
463057408identical copies of a chromosome; full sets of these are created during the S(DNA replication) subphase of interphasesister chromatids
463057409the region of the chromosome that holds the two sister chromatids together during mitosiscentromere
463057410in animal cells, a cytoplasmic organelle that organizes the mitotic spindle fibers during cell reproductionscentriole
463057411series of events that cells go through as they grow and dividecell cycle
463057412cell division in which the nucleus divides into nuclei containing the same number of chromosomesmitosis
463057413mitosis and cytokinesisM phase
463057414The final stage of the cell cycle, in which the cell's cytoplasm divides, distributing the organelles into each of the two new cells.cytokinesis
463057415cell grows, performs its normal functions, and prepares for division; consists of G1, S, and G2 phasesinterphase
463057416The synthesis phase of the cell cycle; the portion of interphase during which DNA is replicated.S phase
463057417the first gap phase of interphase where the cells do most of their growing, cells increase in size and make new proteins and organellesg1 phase
463057418Period of time during interphase--usually the shortest--during which many of the organelles and molecules required for cell division are produced (p. 245).G2 phase
463057419first and longest phase of mitosis, during which the chromosomes become visible and the centrioles separate and take up positions on the opposite sides of the nucleusprophase
463057420The second stage of mitosis, in which discrete chromosomes consisting of identical sister chromatids appear, the nuclear envelope fragments, and the spindle microtubules attach to the kinetochores of the chromosomes.prometaphase
463057421the stage in mitosis in which the duplicated chromosomes line up along the equatorial plate of the spindlemetaphase
463057422the third phase of mitosis, during which the chromosome pairs separate and move toward opposite polesanaphase
463057423the final stage of mitosis before cytokinesis in which the separated chromosomes reach the opposite poles of the dividing cell and the nuclei of the daughter cells form around the two sets of chromosomestelophase
463057424An assemblage of microtubules and associated proteins that is involved in the movements of chromosomes during mitosis.mitotic spindle
463057425Structure present in the cytoplasm of animal cells, important during cell division; functions as a microtubule-organizing center. A centrosome has two centrioles.centrosome
463057426Connects the centrosome with the kinetochore in the centromere region of the chromosomekinetochore microtubules
463057427a specialized condensed region of each chromosome that appears during mitosis surrounding centromere where the chromatids are held together to form an X shapekinetochore
463057428Produces elongation of the cell as they slide past each other away from the middle of the cell (anaphase)nonkinetochore microtubules
463057429A large contractile protein forming the side-arms of microtubule doubletsdynein
463057430microtubules and fibers that radiate out from the centriolesasters
463057431An imaginary plane during metaphase in which the centromeres of all the duplicated chromosomes are located midway between the two polesmetaphase plate
463057432The first sign of cleavage in an animal cell; a shallow groove in the cell surface near the old metaphase plate.cleavage furrow
463057433A double membrane across the midline of a dividing plant cell, between which the new cell wall forms during cytokinesis.cell plate
463057434The phenomenon observed in normal animal cells that causes them to stop dividing when they come into contact with one another.Density dependent inhibition
463057435regulatory proteins that ensure that the events of cell division occur in the proper sequence and at the correct rategrowth factors
463057436The point in the G1 stage where the cell is committed to continue through the rest of the cell cycle and divide. (Some never reach this point, entering a nondividing phase G0)restriction point
463057437Generic term for an enzyme that phosphorylates proteins.kinase
463057438A cellular protein that occurs in a cyclically fluctuating concentration and that plays an important role in regulating the cell cycle.cyclin
463057439Cyclin-dependent kinases. A protein kinase that is active only when attached to a particular cyclin. Activity rises and falls depending on the concentration of the cyclin partner.Cdk
463057440A cyclin-Cdk complex that causes the cell to move from interphase into mitosisMPF
463057441any malignant growth or tumor caused by abnormal and uncontrolled cell divisioncancer
463057442process that converts a normal cell to a cancer celltransformation
463057443The process of cytokinesis in animal cells, characterized by pinching of the plasma membrane; specificallycleavage

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