Cell cycle
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Transcript

  • 1. Cell Reproduction
    • Prokaryotes Bacteria
    • Eukaryotes Plants & animals
  • 2. Eukaryotes
    • Contain a nucleus & membrane bound organelles
    • Asexually reproduce (divide) cells by mitosis for the purpose of
      • repair damaged cells
      • growth of organism
      • development of organism
  • 3. Cell Cycle
    • Stages in growth & division
    • Interphase
      • G1 Phase
      • S Phase
      • G2 Phase
    • M Phase
    • Cytokinesis
  • 4. Interphase – Resting Stage
    • Cells carrying on normal activities
    • Chromosomes aren’t visible
    • Cell metabolism is occurring
    • Occurs before mitosis
  • 5. Interphase
  • 6. Interphase - G1 Phase
    • First growth stage
    • Cell increases in size
    • Cell prepares to copy its DNA
  • 7. Interphase - Synthesis Phase
    • Copying of all of DNA’s instructions
    • Chromosomes duplicated
  • 8. Interphase - G2 Phase
    • Time between DNA synthesis & mitosis
    • Cell continues growing
    • Needed proteins produced
  • 9. M Phase (mitosis)
    • Cell growth & protein production stop
    • Cell’s energy used to make 2 daughter cells
    • Called mitosis or karyokinesis (nuclear division)
  • 10. Life Cycle of a Cell Mitosis is a cycle with no beginning or end .
  • 11. Cells Undergoing Various Stages of Mitosis
  • 12. Stages of Mitosis
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
    • Remember: PMAT
  • 13. Cytokinesis
    • Means division of cytoplasm and all organelles within
    • Occurs after chromosomes separate
    • Forms two, identical daughter cells
  • 14. Cytokinesis Cell Plate Forming in Plant Cells
  • 15. Cytokinesis Cleavage furrow in animal cell Cell plate in animal cell