Mitosis P P T

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Mitosis P P T

  1. 1. Cell Division<br />
  2. 2. Three reasons why cells reproduce by asexual reproduction: 1. Growth 2. Repair 3. Replacement<br />Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun. <br />Cell that reproduce by asexual reproduction reproduce constantly. <br />
  3. 3. Animated Mitosis Cycle<br />http://www.cellsalive.com/mitosis.htm<br /><ul><li>Interphase
  4. 4. Prophase
  5. 5. Metaphase
  6. 6. Anaphase
  7. 7. Telophase & Cytokinesis</li></li></ul><li>Interphaseoccurs before mitosis begins<br /><ul><li>Chromosomes are copied (# doubles)
  8. 8. Chromosomes appear as threadlike coils (chromatin) at the start, but each chromosome and its copy(sister chromosome) change to sister chromatids at end of this phase</li></ul>CELL MEMBRANE<br />Nucleus<br />Cytoplasm<br />
  9. 9. Interphase<br />Plant Cell<br />Animal Cell<br />Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm<br />
  10. 10. Prophase 1st step in Mitosis<br /><ul><li>Mitosis begins (cell begins to divide)
  11. 11. Centrioles(or poles) appear and begin to move to opposite end of the cell.
  12. 12. Spindle fibers form between the poles.</li></ul>Centrioles<br />Sister chromatids<br />Spindle fibers<br />
  13. 13. Prophase<br />Plant Cell<br />Animal Cell<br />Spindle fibers<br />Centrioles<br />Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm<br />
  14. 14. Metaphase 2nd step in Mitosis<br /><ul><li>Chromatids (or pairs of chromosomes) attach to the spindle fibers.</li></ul>Centrioles<br />Spindle fibers<br />
  15. 15. Metaphase<br />Plant Cell<br />Animal Cell<br />Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm<br />
  16. 16. Anaphase 3rdstep in Mitosis<br /><ul><li>Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell. </li></ul>Centrioles<br />Spindle fibers<br />
  17. 17. Anaphase<br />Plant Cell<br />Animal Cell<br />Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm<br />
  18. 18. Telophase4th step in Mitosis<br /><ul><li>Two new nuclei form.
  19. 19. Chromosomes appear as chromatin (threads rather than rods).
  20. 20. Mitosis ends.</li></ul>Nuclei<br />Nuclei<br />Chromatin<br />
  21. 21. Telophase<br />Plant Cell<br />Animal Cell<br />Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm<br />
  22. 22. Cytokinesisoccurs after mitosis<br /><ul><li>Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes.</li></li></ul><li>Animal Mitosis -- Review<br />
  23. 23. Plant Mitosis -- Review<br />
  24. 24. REMEMBER!<br />IPMATC<br />Interphase<br />Prophase<br />Metaphase<br />Anaphase<br />Telophase<br />Cytokinesis<br />IPrayMore AtThe Church<br />
  25. 25. Cell Cycle<br />18<br />
  26. 26. MitosisAnimation<br />http://www.cellsalive.com/mitosis.htm <br />

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