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Cell Reproduction
Vocabulary
| Term | Definition |
|---|---|
| cell cycle | cells reproduce by a cycle of growing and dividing |
| interphase | the stage during which the cell grows, carries out cellular functions, replicates DNA, and prepares for the next stage of the cycle. |
| mitosis | the stage of the cell cycle during which the nucleus and nuclear material divides. |
| cytokinesis | the method by which a cell's cytoplasm divides , creating a new cell. |
| chromosome | the structure that contains the genetic material that is passed from generation to generation of cells. |
| chromatin | the relaxed form of DNA in the cell's nucleus |
| prophase | the first and longest stage of mitosis. the nuclear membrane disintegrates, nucleolus disappears, chromosomes condense, spindle apparatus begins to form between poles |
| sister chromatid | structures that contain identical copies of DNA |
| centromere | structure that joins sister chromatids |
| spindle apparatus | the whole structure that contains spindle fibers, centrioles, and aster fibers |
| metaphase | second stage of mitosis, the chromatids are pulled by motor proteins along the spindle apparatus |
| anaphase | third stage of mitosis, the sister chromatids are pulling apart during anaphase |
| telophase | the stage of mitosis that the chromosomes arrive at the poles of the cell and begin to unwind and relax |
| cyclin | proteins that bind to CDK that control the cell cycle |
| cyclin-dependent kinase | enzyme that forms a complex with cyclins that regulate the cell cycle |
| cancer | the uncontrolled growth and division of cells- a failure in the cell cycle. |
| carcinogen | agents that are known to cause cancer |
| apoptosis | programmed cell death |
| stem cell | unspecialized cells that can develop into specialized cells |