Cell Cycle problems
- 1. How many chromatids are there in a duplicated chromosome?
Options- A. One
- B. Two
- C. Three
- D. Four Discuss
Correct Answer: Two
- 2. The centromeres move toward the poles in __________ .
Options- A. anaphase
- B. interphase
- C. metaphase
- D. prophase Discuss
Correct Answer: anaphase
- 3. The cell cycle is controlled in most cells by
Options- A. time (after a certain length of time the cell divides)
- B. a series of checkpoints
- C. cell size (when the cell reaches a certain size, it divides)
- D. different cells exhibit different control strategies Discuss
Correct Answer: different cells exhibit different control strategies
- 4. Which of the following statements about mitosis is incorrect?
Options- A. The daughter nuclei are genetically identical to the parent nucleus
- B. Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
- C. Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize
- D. Chromosomes move to the metaphase plate using motor proteins, a kind of kinesin, attached to spindle fibers Discuss
Correct Answer: Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
- 5. Which phase of mitosis is associated with separation of chromatids?
Options- A. Prophase
- B. Metaphase
- C. Anaphase
- D. Telophase Discuss
Correct Answer: Anaphase
- 6. The term homologous chromosomes
Options- A. refers to replications of the same chromosome
- B. is another name for sister chromatids
- C. must be haploid
- D. means a pair of chromosomes of the same kind, such as sex chromosomes Discuss
Correct Answer: means a pair of chromosomes of the same kind, such as sex chromosomes
- 7. The term, not related to mitosis is
Options- A. gametes
- B. chromosomes
- C. DNA replication
- D. somatic cells Discuss
Correct Answer: gametes
- 8. Which of the following triggers the division of activated T lymphocytes?
Options- A. FGF
- B. Interlukin 2
- C. PDGF
- D. Erythroprotein Discuss
Correct Answer: Interlukin 2
- 9. Microtubules grow from the poles to kinetochores of each chromatid during
Options- A. prophase
- B. metaphase
- C. anaphase
- D. telophase Discuss
Correct Answer: prophase
- 10. At which of the following check point, mitosis is controlled?
Options- A. G1
- B. G2
- C. M
- D. S Discuss
Correct Answer: G2
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