Nuclear Division

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Author:
melissag94
ID:
238564
Filename:
Nuclear Division
Updated:
2013-10-03 14:00:41
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BIO exam
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powerpoint exam 2
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  1. inside nucleus and has 2 chromosomes of each type
    diploid
  2. have one chromosome of each type
    haploid
  3. two kinds of nuclear division?
    • mitosis
    • meiosis
  4. a process by which two new, genetically identical nuclei are produced from a single parental nucleus
    mitosis
  5. a process by which a diploid nucleus produces four haploid nuclei
    meiosis
  6. 1st phase of cell cycle? what happens?
    • G1
    • cell is maturing, synthesizing things it needs
  7. 2nd phase of cell cycle? what happens?
    • S (synthesis) phase
    • replicate genetic info, make copy of chromosomes
  8. 3rd phase of cell cycle? what happens?
    • G2
    • cell is preparing to divide
  9. 4th phase of cell cycle?
    cell divides and process begins again
  10. what happens to cells who do not move out of G1 phase?
    • they stay the same the rest of life
    • can happen in spinal chord
  11. describe what nucleus looks like during nuclear division?
    stages of nuclear division
  12. chromatin condenses into visible, double chromosomes attached at the centromere
    prophase
  13. during what phase of mitosis does the nuclear envelope being to disintegrate and the spindle apparatus begins to form?
    prophase
  14. chromosomes become aligned along the middle of the cell, spindle apparatus is complete
    metaphase (mitosis)
  15. chromosomes begin to "move" to opposite poles of the cell along the spindle apparatus
    anaphase
  16. reverse propohase?
    telophase
  17. everything that happened in prophase is undone, chromosomes become unorganized, nucleus reappears, nuclear envelope forms. what phase of mitosis?
    telophase
  18. period between actual phases?
    interphase
  19. IPMT?
    • interphase
    • prophase
    • metaphase
    • telophase
    • MITOSIS******
  20. where chromatids attach
    centromere
  21. when is mitosis over?
    when you have 2 genetically identical nuclei
  22. cytokinesis in an animal?
    cell splits and creates 2 genetically identical cells that are just like the mom cell
  23. cytokinesis in plant?
    cell wall forms in middle of plant cell aka cell plate
  24. what is mitosis used for?
    • general growth and development
    • humans
    • would healing
    • cloning
  25. what is considered uncontrolled mitosis?
    cancer

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