Human Anatomy And Physiology Test Chapter 3

49 Questions | Total Attempts: 58

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Human Anatomy And Physiology Test  Chapter 3


Questions and Answers
  • 1. 
    Chromosomes that have not been condensed?
  • 2. 
    Name of condensed chromosomes?
  • 3. 
    Barlike bodies of tightly coiled chromatin: visible during cell division?
  • 4. 
    Defines changes from cell formation until it reproduces or divides?
  • 5. 
    Subphase:Vigorous growth
  • 6. 
    Subphase:Gap phase in cells that permnently cease?
  • 7. 
    Subphase:Dna replication
  • 8. 
    Subphase: Preparation for division
  • 9. 
    _______ untwist the double helix and exposes complimentary chains.
  • 10. 
    Y-shaped site of replication?
  • 11. 
    ______________ splices together short segments of discontinous strand.Adds short segments together.
  • 12. 
    Because each new molecule consists of one old and one new nucleotide strand, this method of DNA replication is called_____________
  • 13. 
    _____________ is synthesized continously following the movement of the replication fork.
  • 14. 
    ___________ is constructed in segments in the opposite direction and requires that a primer initiates replication of each segment.
  • 15. 
    What is essential for body growth and tissue repair?
  • 16. 
    Process during which the chromosomes are redistributed to two daughter nuclei: nuclear division; consists of prophase, metaphase, anaphase and telophase.
  • 17. 
    Division of the cytoplasm by cleavage_________.
  • 18. 
    Which Phase:Centrosomes seperate and migrate toward opposite poles.Mitotic spindles and asters form.Chromosomes become visible, each with two chromatids joined together at te centromere.
  • 19. 
    Which Phase:Nuclear envelope fragmentsKinetochore microtubules attach to kinetochore of centromeres and draw them toward the equator of the cellPolar microtubules assists in forcing the poles apart.,
  • 20. 
    Which Phase:Centromeres of chromosomes are aligned at the equator.This plane midway between the poles
  • 21. 
    Which Phase:Shortest phaseCentromeres of chromosomes split simultaneously-each chromatid now becomes a chromosomesChromosomes are V shaped are pulled toward poles by motor proteins of kinetochores
  • 22. 
    Which Phase:Begins when chromosomes movement stopsThe two sets of chromosomes uncoil to form chromatinNew nuclear membrane forms around each chromatin mass
  • 23. 
    Begins during late anaphase is completed after mitosis ends.Two daughter cells are pinched apart.
  • 24. 
    Control Cell Division:Contact inhibitionGrowth-inhibiting factors produced by repressor genes
  • 25. 
    Control of cell division:Critical volume of cell when area of membrane is inadequate for exchange.Chemical signals for growth, hormones, and cylins
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