ch05 - Chapter 5 Chromosomes: Where Are the Genes Found? 1....

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Chapter 5 Chromosomes: Where Are the Genes Found? 1. All of the following are considered phases of mitosis (active cell division) EXCEPT: a. interphase b. prophase c. metaphase d. anaphase e. telophase Ans: a 2. ALL of the following are involved in cell division EXCEPT: a. disappearance of nuclear envelope b. reappearance of nuclear envelope c. chromosome condensation d. changes in the cytoskeleton e. disappearance of the cell membrane Ans: e 3. In what phase of the cell cycle is DNA replicated? a. prophase b. metaphase c. interphase d. anaphase e. telophase Ans: c 4. In which phase of mitosis do the two sister chromatids separate? a. prophase b. anaphase c. telophase d. metaphase e. prophase II 54
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Chapter 5 Ans: b 5. In which phase of mitosis do the chromosomes line up at the equator of the dividing cell? a. metaphase b. prophase c. anaphase d. telophase e. interphase Ans: a 6. The function of mitosis is for: a. growth and repair b. production of gametes c. production of a zygote d. asexual reproduction e. both a and d Ans: e 7. Suppose you observe that an actively dividing culture of E. coli bacteria has radioactive DNA. If you isolated one cell from this culture and observed its cell division, what would you expect to find in telophase of that cell’s cycle? a. One of the daughter cells, but not the other, has radioactive DNA b. Neither daughter cell has radioactive DNA c. The DNA in both daughter cells is radioactive d. Surrounding cells but not the daughter cells have radioactive DNA e. None of the above Ans: c 8. Mitosis in flowering plants and living animals is similar in that both: a. a cell plate forms b. a cleavage furrow forms c. large centrioles attach to the spindle fibers d. centromeres split and single chromosomes move apart e. cytokinesis does not occur 55
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Chapter 5 Ans: d 9. A liver cell in prophase of mitosis can be distinguished from a spermatagonial cell in phrophase I of meiosis by the presence of a. a non disturbed nucleus in the mitotic cell b. a spindle in the mitotic cell c. twice as many chromosomes in the meiotic cell d. half as many chromosomes in the meiotic cell e. paired homologous chromosomes in the meiotic cell Ans: e 10. Another word for uncontrolled cell growth is _________. a. stasis b. homeostasis c. cancer d. diabetes e. rabies Ans: c 11. Cells that have stopped dividing are said to be in what stages of the cell cycle? a. G 0 and G 1 b. G 0 and G 2 c. M and G 2 d. G 1 and G 2 e. M and G 1 Ans: a 12. If 2n=46 for a particular cell, then the chromosome number in each cell after meiosis would be a. 92 b. 46 c. 13 d. 6 e. none of the above 56 56
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Chapter 5 Ans: c 13. Some genes are capable of moving from one chromosomal locus to another. There is evidence that this has happened a number of times over the course of evolution. What are such genes called? a. jumping genes
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ch05 - Chapter 5 Chromosomes: Where Are the Genes Found? 1....

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