Human Anatomy And Physiology Test Chapter 3
49 Questions
| Total Attempts: 58
E100%
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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