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13 Cards in this Set
- Front
- Back
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gene |
the most basic physical unit of heredity a segment of nucleic acids that codes for a functional unit of RNA and/or a protien |
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chromosome |
in a eukaryotic cell one of the structures in the nucleus that are made up of DNA and protiens in a prokaryotic cell the main ring of DNA |
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chromatin |
the substance that composes eukaryotic chromosomes it consists of specific proteins DNA and small amounts of RNA |
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chromatid |
one of the two strands of chromosome that become visible during meiosis or mitosis |
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centromere |
the region of the chromosome that holds the two sister chromatids together during mitosis |
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cell cycle |
the life of a cell in eukaryotes it consists of a cell growth period in which DNA is sythesized and a cell division period in which mitosis takes place |
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interphase |
the period of the cell cycle during which activities such as cell growth and protein synthesis occur without visible signs of cell division |
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mitosis |
in eukaryotic cells a process of cell division that forms two new nuclei each of which has the same number chromosomes |
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cytokinesis |
the division of the cytoplasm of a cell cytokinesis follows the division of the cells nucleus by mitosis or meiosis |
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spindle |
a network of microtubules that forms during mitosis and moves chromatids to the poles |
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centrosome |
an organelle that contains the centrioles and is the center of the dynamic activity in mitosis |
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cancer |
a type of disorder of cell growth that results in invasion and destruction of surrounding healthy tissue by abnormal cells |
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tumor |
a growth that arises from normal tissue but that grows abnormally in rate and structure and lacks function |
