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Active&Passive
| Question | Answer |
|---|---|
| cellcycle | Interphase Prometaphase Medaphase Anaphase Telophase Cytokinesis |
| To cycle or not to cycle? | 1.proper,nutrients must be avaliable. 2.Density-dependent inhibition forces cells to exit the cell cycle. 3.Growth factors can trigger a cell to re-enter the cycle. |
| Phases of the cell cycle? | "Gap 2" *Protein synthesis * Organelle duplication "DNA synthesis" *Protein synthesis *Organelle duplication "Gap 1" *Protein synthesis * Organelle duplication G0- non-diving resting state. |
| Why mitosis? | *Mitosis is required to precisely distribute the duplication sets of chromosomes to the daughter cell. |
| Histone | * A protein around which DNA is wrapped to from chromatic chromosomes are composed. |
| Chromatin | * The complex of DNA and histone proteins of which eukaryotic chromosmes are composed. |
| Sister Chromatids: | Two identical copies of each chromosome. |
| Centromere | The region of a eukaryrotic chromosome where sister chromatic are attached each other after replication. |
| Kinetochore: | A region of a eukarotic chromosome that functions as an attachment site for the mitotic spindle. |
| Mitotic Spindle: | An array of micro-tubules responsible for the precise distribution of chromosomes to the daughter cells. |
| Centrosome: | The microtubule, organizing center. |
| Centriole: | An orhanelle that helps orhanized the mitotic spindle during animal cell dirision. |
| Aster: | A radial array of microtubules in animal cells that help brace the centrioles againts the plasma membrane during reaction of the mitotic spindle. |
| Prophase | *Chromatin conderises into chromosomes *Nucleolus disappears *Centrosomes migrate ad synthesize spindle fibers. * nuclear envelope *spindle fibers attach to sister chromatids *honkinetochore microtubules grow toward center of cell. |
| Metaphase | *chromsomes line up a long metaphase plate *sister chromatids separate |
| Telophase | *Nuclear envelopes form *Nucleoli reappear *Spindle apparatus is disassemble |
| Cytokinesis in Animals | *contractile ring forms around cell *cell pincher in two *celearage furrow forms |
| Contractive Ring | A ring of actin micro filaments that cnstricts around animal cells. |
| Cleavage Furrow | A groove in the cell surface approximately at the site of the old metaphase plate. |
| Cytokinesis in plants | *cell plate assemble *New cell wall forms |
| Cell Plate: | A double membrane assemble from excess membrane components between which the new cell wall forms. Whats going on- *Observe mitosis in plant and animal cell. *Count cells to determine how long a cell spend in each stage. |
| Interphase | *Chromatin is spread throughout nucleus *Nucleolus has disappeared. |
| Prophase | *chromatin cordenses into chromosomes *Nucleolus is visible |
| Metaphase | *chromosomes lined up along metaphase plate |
| Anaphase | *sister chromatids move to opposite poles. |
| Telophase | *spindle apparatus is disassembled. *Nuclear envelopes form. |
| M-Phase | Prophase Metaphase Anaphase Telophase Cytokinesis |
Created by:
Actingforever
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