Terrei bio project 189

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Terrei bio project 189

  1. 2. <ul><li>There are two phases in the cell cycle which splits between interphase and mitosis </li></ul><ul><li>Interphase: G1 phase, S phase, G2 phase </li></ul><ul><li>Mitosis: Prophase, Metaphase, Anaphase, Telophase </li></ul><ul><li>The cell cycle plays an important role to our daily lives without out it we would not be alive, by making new cells to replace our old ones helping us to replenish our-cells </li></ul>
  2. 3. <ul><li>The cell grows before the cloning of the DNA </li></ul><ul><li>prepares to replicate DNA </li></ul><ul><li>At the end of this phase the cell goes through the first check point of the cell cycle that make sure if the cell is functioning normally cells that cant divide stay at this phase and cant move on </li></ul>
  3. 4. <ul><li>DNA gets clone (chromosomes are being replicated) </li></ul><ul><li>The DNA gets split at their hydrogen bonds by helicase DNA polymerase adds the corresponding bases to the Strand of DNA forming two sister chromatids (identical   DNA double helix molecules) </li></ul><ul><li>During this process the centromere starts to form which is the area that is near the middle of the two chromosomes attaching them together which gets split later </li></ul><ul><li>During this phase the cell cycle have a check point where the DNA gets repaired if damaged </li></ul>
  4. 5. <ul><li>Cells prepare for mitosis </li></ul><ul><li>Ensuring the whole of the DNA and it’s components </li></ul><ul><li>Including a third checkpoint </li></ul>
  5. 6. <ul><li>Eukaryotic cell divides it-self by separating the chromosomes in the cell nucleus making two identical cells and with nucleus </li></ul>
  6. 7. <ul><li>Prophase -Chromosomes condense, the nuclear membrane breaks down, and spindle fibers form </li></ul><ul><li>Metaphase - The replicated chromosomes line up in the middle of the cell </li></ul>
  7. 8. <ul><li>Anaphase -Chromosomes separate and the cell becomes elongated, with distinct ends (poles) </li></ul><ul><li>Telophase-Nuclear envelopes re-form at the two poles and new cell membranes are formed to create two independent cells </li></ul>
  8. 9. <ul><li>Cell wall forms and daughter cells are born </li></ul><ul><li>One pac man (cell) divide into many pac mans </li></ul>
  9. 11. Review

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