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Mitosis + Cancer IB
IB bio mitosis cancer
| Term | Definition |
|---|---|
| First stage of mitosis | Interphase |
| Second stage of mitosis | Prophase |
| Third Stage of Mitosis | Metaphase |
| Fourth Stage of Mitosis | Anaphase |
| Fifth Stage of Mitosis | Telophase |
| Mitosis | One cell dividing into two identical cells |
| Mitosis is used for | Growth, Tissue repair, Asexual reproduction |
| The cell cycle is | A repetitive stages of cell growth and division |
| When is the cell cycle most active | Interphase |
| What is it called in the cell cycle when a cell divides | Mitosis |
| Interphase takes up how much of mitosis | 70 percent, high metabolic activity |
| Cells can remain in | Interphase indefinitely |
| In prophase chromosomes | Supercoil, and become visible |
| What happens to the centriole during prophase? | It devised and goes to opposite sides of the cell. |
| When does the spindle from | during prophase |
| When does the nuclear membrane break down | prophase |
| What happens to the nucleolus during prophase | it becomes less visible |
| Where are centrioles during metaphase | at different poles of the cell ready to pull |
| What do the spindles do during metaphase | They attach to the chromosomes via the centromere, ready to pull them apart |
| Centromere is | Where the spindles attach during metaphase, there is one on each side |
| Where are the chromosomes during metaphase? | In the center or equator of the cell |
| What do the spindles do during anaphase? | The spindles contract |
| What happens to the chromosomes | They are pulled apart into chromatids |
| Chromatids | Daughters chromosomes, half a chromosome |
| Each half the cell receives | one chromatid from each chromosome |
| During telophase the chromatids | reach the poles of the spindles, and begin to uncoil - become less distinct |
| What begins to form during anaphase | Nuclear envelope |
| Telophase | Two nucelli are formed |
| Cytokinesis | Cell divides into two cells |
| Cytokinesis in animal cells | the cells walls constrict |
| Cytokinesis in plant cells | the cell wall is laid down |
| The daughter cells are | genetically identical |
| Cyclins | Group of proteins that control cell actions and stuff |
| Mutation | Random change in sequence of DNA |
| Cancer is caused by | Cells continue to dived with bad DNA because they have lost the abililty to apoptosis |
| Apoptosis | Cell suicide |
| Begin tumor | harmless, contained |
| Carcinoma | Contained, potential to spread |
| Malignant | Spread to other parts of the body |
| Metastasize | cancer spread |