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Chapter 9: Cell Continuity

  1. What are 8 differences between meiosis and mitosis?
    • Mitosis:
    • 1. 2 daughter cells made
    • 2. Replication- chromosome no. is same
    • 3. Single division
    • 4. Chromosomes are copied, original and copy separated
    • 5. Occurs in haploid/diploid cells
    • 6. Occurs in somatic (body) cells
    • 7. No crossing over (genes)
    • 8. Genetic stability- chromosome structure stays the same.

    • Meiosis:
    • 1. 4 daughter cells
    • 2. Reduction- no. of chromosomes is halved
    • 3. Double division
    • 4. Homologous pairs separated first
    • 5. Diploid cells only
    • 6. Reproductive cells
    • 7. Crossing over
    • 8. Genetic variation- chromosome structure changes.
  2. Which type of cell division divides by single division / double division?
    • Mitosis- single division
    • Meiosis- double division (reduction division)
  3. Which type of cell division has crossing over?
    Meiosis has crossing over.
  4. Which type of cell division has genetic variation?
    Meiosis has genetic variation- chromosome structure changes.
  5. What are the 3 phases of the cell cycle?
    • Interphase
    • Mitosis (nuclear division)
    • Cytokinesis (cell division)
  6. What is the difference between mitosis and cytokinesis?
    • Mitosis- nuclear division
    • Cytokinesis- cell division
  7. What is interphase?
    Interphase: when cells are not actively dividing they’re said to be in interphase, resting stage.
  8. What is another word for interphase?
    Resting stage
  9. What 3 things occur at interphase?
    • DNA replication
    • Cell organelles replicate
    • Energy builds up
  10. What happens at interphase for DNA replication?
    • The single stranded chromosomes duplicate- ie sister chromatids are made, held together by the centromere.
    • DNA replication is important to pass DNA (genes) on to new generations of cells unchanged.
  11. What do single stranded chromosomes do for DNA replication at interphase?
    The single stranded chromosomes duplicate- ie sister chromatids are made, held together by the centromere.
  12. Why is DNA replication important during interphase?
    DNA replication is important to pass DNA (genes) on to new generations of cells unchanged.
  13. Which two cell organelles replicate at interphase?
    Mitochondria and centrioles are replicated.
  14. Why is energy built up at interphase?
    Energy is built up to carry the process through- ATP (Adenosine Triphosphate).
  15. What does ATP stand for?
    Adenosine Triphosphate
  16. What are the 4 stages of Mitosis?
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase
Author
jacquelineglynn
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357845
Card Set
Chapter 9: Cell Continuity
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