cell division
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| 528848682 | cell division | the process in reproduction and growth by which a cell divides to form daughter cells | |
| 528848683 | genome | the ordering of genes in a haploid set of chromosomes of a particular organism | |
| 528848684 | binary fission | a form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size | |
| 528848685 | somatic cell | any of the cells of a plant or animal except the reproductive cells | |
| 528848686 | chromosomes | threadlike structures made of DNA molecules that contain the genes | |
| 528848687 | chromatin | the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins | |
| 528848688 | sister chromatids | identical copies of a chromosome; full sets of these are created during the S(DNA replication) subphase of interphase | |
| 528848689 | centromere | the region of the chromosome that holds the two sister chromatids together during mitosis | |
| 528848690 | centriole | in animal cells, a cytoplasmic organelle that organizes the mitotic spindle fibers during cell reproductions | |
| 528848691 | cell cycle | series of events that cells go through as they grow and divide | |
| 528848692 | mitosis | cell division in which the nucleus divides into nuclei containing the same number of chromosomes | |
| 528848693 | M phase | mitosis and cytokinesis | |
| 528848694 | cytokinesis | The final stage of the cell cycle, in which the cell's cytoplasm divides, distributing the organelles into each of the two new cells. | |
| 528848695 | interphase | cell grows, performs its normal functions, and prepares for division; consists of G1, S, and G2 phases | |
| 528848696 | S phase | The synthesis phase of the cell cycle; the portion of interphase during which DNA is replicated. | |
| 528848697 | g1 phase | the first gap phase of interphase where the cells do most of their growing, cells increase in size and make new proteins and organelles | |
| 528848698 | G2 phase | Period of time during interphase--usually the shortest--during which many of the organelles and molecules required for cell division are produced (p. 245). | |
| 528848699 | prophase | first 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 nucleus | |
| 528848700 | prometaphase | The 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. | |
| 528848701 | metaphase | the stage in mitosis in which the duplicated chromosomes line up along the equatorial plate of the spindle | |
| 528848702 | anaphase | the third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles | |
| 528848703 | telophase | the 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 chromosomes | |
| 528848704 | mitotic spindle | An assemblage of microtubules and associated proteins that is involved in the movements of chromosomes during mitosis. | |
| 528848705 | centrosome | Structure present in the cytoplasm of animal cells, important during cell division; functions as a microtubule-organizing center. A centrosome has two centrioles. | |
| 528848706 | kinetochore microtubules | Connects the centrosome with the kinetochore in the centromere region of the chromosome | |
| 528848707 | kinetochore | a specialized condensed region of each chromosome that appears during mitosis surrounding centromere where the chromatids are held together to form an X shape | |
| 528848708 | nonkinetochore microtubules | Produces elongation of the cell as they slide past each other away from the middle of the cell (anaphase) | |
| 528848709 | dynein | A large contractile protein forming the side-arms of microtubule doublets | |
| 528848710 | asters | microtubules and fibers that radiate out from the centrioles | |
| 528848711 | metaphase plate | An imaginary plane during metaphase in which the centromeres of all the duplicated chromosomes are located midway between the two poles | |
| 528848712 | cleavage furrow | The first sign of cleavage in an animal cell; a shallow groove in the cell surface near the old metaphase plate. | |
| 528848713 | cell plate | A double membrane across the midline of a dividing plant cell, between which the new cell wall forms during cytokinesis. | |
| 528848714 | Density dependent inhibition | The phenomenon observed in normal animal cells that causes them to stop dividing when they come into contact with one another. | |
| 528848715 | growth factors | regulatory proteins that ensure that the events of cell division occur in the proper sequence and at the correct rate | |
| 528848716 | restriction point | The 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) | |
| 528848717 | kinase | Generic term for an enzyme that phosphorylates proteins. | |
| 528848718 | cyclin | A cellular protein that occurs in a cyclically fluctuating concentration and that plays an important role in regulating the cell cycle. | |
| 528848719 | Cdk | Cyclin-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. | |
| 528848720 | MPF | A cyclin-Cdk complex that causes the cell to move from interphase into mitosis | |
| 528848721 | cancer | any malignant growth or tumor caused by abnormal and uncontrolled cell division | |
| 528848722 | transformation | process that converts a normal cell to a cancer cell | |
| 528848723 | cleavage | The process of cytokinesis in animal cells, characterized by pinching of the plasma membrane; specifically |
