Powerpoint mitosis 1

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Powerpoint mitosis 1

  1. 1.
  2. 2.
  3. 3. Have your body changed in the pass six months? Tall/Weight<br />
  4. 4. Are you taller?<br />
  5. 5. Did your hair grow?<br />
  6. 6. Clip your toenails?<br />
  7. 7. Broken a bone recently?<br />
  8. 8. Wound – how does your body repair itself?<br />
  9. 9.
  10. 10. Mitosis<br />Definition:<br />To create two identical daughter cells that are genetically identical to the parent cells<br />
  11. 11. Q: What kind of cells would perform mitosis?<br />A: Somatic cells <br />(all body cells except gamete cells)<br />
  12. 12.
  13. 13. Acronym for MITOSIS<br />IPMAT (C)<br />Interphase<br />Prophase<br />Metaphase<br />Anaphase<br />Telophase<br />(Cytokinesis)<br />
  14. 14. IPMAT (C)  IPMAN ©<br />Interphase<br />Prophase<br />Metaphase<br />Anaphase<br />Telophase<br />(Cytokinesis)<br />
  15. 15. Mitosis Video 1<br />
  16. 16. Chromosome in Mitosis<br />Homologous chromosome and sister chromatids<br />
  17. 17. Anaphase<br />Centromere splits and homologus chromosomes <br />go to opposite poles of cell<br />
  18. 18.
  19. 19. Interphase<br />
  20. 20. Interphase<br /><ul><li>Interphase is not part of mitosis
  21. 21. It involves synthesis of new organelles (G1), replication of chromosome (S) and synthesis of proteins necessary for mitosis (G2).
  22. 22. Chromosomes appears as thread-like structures called chromatin.</li></li></ul><li>Prophase<br />
  23. 23. Prophase<br /><ul><li> Chromatids (replicated chromosomes condense and become visible in a light microscope)
  24. 24. The nucleolus disappears
  25. 25. Paired centrioles (centrosomes) move opposite ends of the cell
  26. 26. Spindle forms
  27. 27. Asters (short microtubules radiating from centrioles) form</li></li></ul><li>Metaphase<br />
  28. 28. Metaphase<br /><ul><li> Sister chromatids line up at the spindle equator
  29. 29. Each centromere attaches itself to the spindle fibre
  30. 30. At the end of metaphase, the centromeres divide.</li></li></ul><li>Anaphase<br />
  31. 31. Anaphase<br /><ul><li> The separated chromatids, now called chromosomes are pulled apart towards the opposite poles by the contraction of spindle fibres
  32. 32. Anaphase is completed when chromosomes arrive at the poles</li></li></ul><li>Telophase<br />
  33. 33. Telophase<br /><ul><li>Chromosomes reach the poles of the cell and cannot be seen clearly
  34. 34. The spindle fibres disappear and centrioles replicate
  35. 35. Nuclear membrane re-forms around chromosomes and the nucleolus reappears in each nucleus
  36. 36. Telophase may lead straight into cytokinesis</li></li></ul><li>Cytokinesis<br /><ul><li> Cytokinesis is the separation of the parent cell’s cytoplasm at the end of a mitosis
  37. 37. Cytokinesis in animal and plant cells are different
  38. 38. In animal cell:
  39. 39. CLEAVAGE FURROW (division furrow)</li></li></ul><li>
  40. 40. Group activity<br />
  41. 41.
  42. 42. Acronym for MITOSIS<br />IPMAT (C)<br />Interphase<br />Prophase<br />Metaphase<br />Anaphase<br />Telophase<br />(Cytokinesis)<br />
  43. 43. IPMAT (C)  “IPMAN ©”<br />Interphase<br />Prophase<br />Metaphase<br />Anaphase<br />Telophase<br />(Cytokinesis)<br />
  44. 44. Interphase<br />
  45. 45. Prophase<br />
  46. 46. Metaphase<br />
  47. 47. Anaphase<br />
  48. 48. Telophase<br />
  49. 49. Mitosis Video 1<br />
  50. 50. Mitosis Video 2<br />

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