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8.2 biology words

biology

TermDefinition
chromosomes a threadlike structure of nucleic acids and proteins found in the nucleus of most living cells, carrying genetic information in the form of genes.
chromatin the material of which the chromosomes of organisms other than bacteria are composed.
cell cycle is the series of events that take place in a cell leading to its divisions and duplication that produces two daughter cells.
interphase the resting phase between successive mitotic divisions of cells, or between the first and second divisions of meiosis.
mitosis a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
prohase the first stage of cell division, before metaphase, during which the chromosomes become visible as paired chromatids and he nuclear envelope disappears.
sister chromatid are pieces of identical DNA that are critical in the process of cell replication and division.
centromere the point on a chromosome by which it is attached to a spindle fiber during cell division.
centriole a minute cylindrical organelle near the nucleus in the animal cells occurring in pairs and involved in the development of spindle fibers in cell division.
spindle a slender mass of microtubules formed when a cell divides. at metaphase, he chromosomes become attached to it by their centromeres before being pulled toward its end.
metaphase the second stage of cell division, between prophase and anaphase, during which the chromosomes become attached to the spindle fibers.
anaphase the stage of meiotic and mitotic cell division which the chromosomes move away from one another to opposite poles of the spindle.
telophase the final phase of cell division, between anaphase and interphase, in which the chromatids or chromosomes move to opposite ends of the cell and two nuclei are formed.
cytokinesis the cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.
tissue any of the distrinct types of material of which animals or plants are mad, consisting of specialized cells ad their products.
organ a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.
organ system is a group of organs that work together to perform one or more functions.
Created by: jodypruitt
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