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Cell Reproduction Part 2
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26. Which of the following is not monitored in G2 phase? Cell size Alignment on the metaphase plate Cellular environment DNA replication
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27. Deactivation of M-phase-promoting factor signals entry into which of the following mitotic phases? Prophase Anaphase Metaphase Prometaphase
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28. A cell with a diploid number of 20 has which of the following haploid numbers? 80 10 40 2 2
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29. During which of the following cell cycle phases does DNA replication take place? M phase S phase G1 G2
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30. During which sub-phase of mitotic anaphase do centrosomes separate? Anaphase D Anaphase B Anaphase C Anaphase A
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31. A somatic cell has a haploid number of 10. What is its diploid number after DNA replication? 80 40 20 10
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32. Which of the following is not a stage of mitotic interphase? G1 M phase S phase G2
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33. During which sub-phase of mitotic anaphase do chromosomes separate? Anaphase B Anaphase A Anaphase C Anaphase D
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34. What is the typical duration of a normal, fast-dividing, mammalian cell cycle? 1 hour 24 hours 10 hours 1 year
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35. The human haploid number is which of the following? 30 23 10 46
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36. Which of the following events takes place during mitotic telophase? Disassembly of nuclear envelope Reassembly of nuclear envelope Metaphase plate formation Cell division
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37. In extremely fast dividing cells, which of the following phases of the cell cycle is likely to be decreased or eliminated? Interphase G1 M phase S phase
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38. How many homologous pairs are present in a cell with a diploid number of 40? 40 10 5 5 20
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39. Which class of microtubules disappears during mitotic telophase? Astral Kinetochore Polar Radial
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40. Which of the following is typically the longest phase of the cell cycle? M phase G1 G2 S phase
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41. A somatic cell has a haploid number of 10. After mitosis, what is the haploid number of each of the resulting cells ? 5 5 10 20 40
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42. Which class of microtubule elongates during mitotic telophase? Astral Polar Kinetochore Radial
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43. Which of the following phases usually contains the highest concentration of DNA per cell? G1 G2 M phase S phase
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44. Germ cells give rise to what class of cell? Mitotic Gamete Somatic Meiotic
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45. Which of the following is not a component of the contractile ring? Actin Cyclin Myosin Tubulin
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46. During which phase do mitotic cyclins accumulate in the cell cycle? S phase G2 M phase G1
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47. A somatic cell has a haploid number of 20. After DNA replication, how many pairs of sister chromatids are in the cell? 5 5 20 40 10
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48. Which of the following is not a type of cell that results from meiotic cellular reproduction? Germ cell Gamete Diploid Haploid
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49. The activation of cyclin-dependent protein kinases by G1 cyclins signals entry into which mitotic cell cycle phase? M phase S phase G2 G1
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50. During which phase of meiosis does genetic re-assortment take place? Prometaphase 1 Prophase 1 Metaphase 1 Anaphase 1
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http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells3.html
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