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Biology Chapter 10
| Term | Definition |
|---|---|
| Cell division | the process by which a cell divides into two new daughter cells |
| mitosis | the first stage of division. Division of the cell nucleus |
| cytokinesis | the second stage of division. Division of the cytoplasm |
| chromatid | the replicated sister chromosomes |
| centromere | what the chromatids are are attached to. Located near the middle of the chromatids. |
| interphase | the "in between" period of growth between cell division. |
| cell cycle | a cycle that consists of four phases, Mitosis and cytokinesis (M phase), chromosome replication (S phase), and G1 and G2. |
| prophase | the first and longest stage of mitosis where the chromosomes become visible and the centrioles separate. |
| Centriole | two tiny structures located in the cytoplasm near the nuclear envelope. |
| spindle | a fanlike microtubule that helps separate the chromosomes |
| metaphase | the second phase of mitosis when the chromosomes line up across the center of the cell and the chomosomes connect to the spindle. |
| anaphase | the third phase of mitosis where the centromeres split and the sister chromatids separate to become individual chromosomes. |
| telophase | the fourth and final phase of mitosis where the chromosomes disperse into a mass of tangled and dense material. The nuclear envelope reforms and the spindle breaks apart as the nucleus becomes visible. |