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science ch. 3
cells and organisms
Term | Definition |
---|---|
cell cycle | Most cells in an organism go through a cycle of growth, development, and division. |
interphase | The period during the cell cycle of a cell's growth and development. |
sister chromatids | Two identical chromosomes, make up a duplicated chromosome. |
centromere | Sister chromatids are held together by a structure. |
mitosis | The nucleus and its contents divide. |
cytokinesis | The cytoplasm and its contents divide. |
daughter cells | The two cells that result from mitosis and cytokinesis. |
cell differentation | The process by which cells become different types of cells. |
stem cells | Unspecialized cells that are able to develop into many different cell types. |
tissues | Groups of similar types of cells that work together to carry out specific tasks. |
organs | Groups of different tissues working together to perform a particular job. |
organ systems | Groups of different organs that work together to complete a series of tasks. |
complex | made of two or more parts |
fiber | a long muscle cell |