Cell Cycle problems
- 1. Which of the following is the normal cell cycle, primarily regulated at checkpoints?
Options- A. Metaphase in mitosis
- B. Anaphase, G1 boundary
- C. G1-S boundary
- D. S-G2 boundary Discuss
Correct Answer: G1-S boundary
- 2. Which of the following is the primary growth phase of a cell?
Options- A. G1
- B. G2
- C. M
- D. G0 Discuss
Correct Answer: G1
- 3. The G0 phase is
Options- A. a permanent state of all body cells
- B. the state of most cells in an animal body
- C. another name for interphase
- D. all of the above Discuss
Correct Answer: the state of most cells in an animal body
- 4. Which of the following from a blood clot stimulates the growth of cells in the healing process?
Options- A. EGF
- B. PDGF
- C. MPF
- D. NGF Discuss
Correct Answer: PDGF
- 5. What structure forms as a network of protein cables during cell division?
Options- A. Spindle
- B. Aster
- C. Kinetochore
- D. Chromatid Discuss
Correct Answer: Spindle
- 6. In prokaryotes, just before the cell divides, the two daughter genomes are attached side by side to the
Options- A. cell membrane
- B. replication origin
- C. centromeres
- D. equatorial plate Discuss
Correct Answer: cell membrane
- 7. In which phase, each chromosome replicates to produce two sister chromatids?
Options- A. Anaphase
- B. Interphase
- C. Metaphase
- D. Prophase Discuss
Correct Answer: Interphase
- 8. Each chromosome contains two chromatids by the end of the __________ phase in the life cycle of a human cell.
Options- A. C
- B. G2
- C. M
- D. S Discuss
Correct Answer: S
- 9. At the center of the cell cycle control system is Cdk, a protein that
Options- A. is phosphorylated to become active
- B. binds to different cyclins
- C. is only active during mitosis
- D. manufactures growth factors Discuss
Correct Answer: binds to different cyclins
- 10. The event(s) which does not occur during interphase, is/are
Options- A. Chromatin condenses
- B. Protein Synthesis
- C. Organelles replication
- D. DNA replication Discuss
Correct Answer: Chromatin condenses
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