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Cell Cycle and Cell Division

Cell Cycle Phases (G1, S, G2, M) Practice Questions

20 free Cell Cycle Phases (G1, S, G2, M) practice questions for the NCERT Biology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.

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All Cell Cycle Phases (G1, S, G2, M) questions

20 questions
  1. Q1. Which phase of the cell cycle is also known as the resting phase, despite being a period of high metabolic activity and preparation for division?
  2. Q2. In a typical 24-hour cell cycle of a human cell, approximately how long does the actual M phase (mitosis) last?
  3. Q3. During which sub-phase of interphase does the actual replication of DNA take place?
  4. Q4. If a cell has 2C amount of DNA at the start of the G1 phase, what will be the amount of DNA after the completion of the S phase?
  5. Q5. What happens to the chromosome number of a cell after the completion of the S phase if the initial number was 2n?
  6. Q6. In animal cells, besides DNA replication in the nucleus, which of the following events occurs in the cytoplasm during the S phase?
  7. Q7. The phase of the cell cycle where proteins are synthesized in preparation for mitosis while cell growth continues is:
  8. Q8. Cells that do not divide further exit the G1 phase to enter an inactive stage called the:
  9. Q9. Which of the following is the correct sequence of phases in the cell cycle?
  10. Q10. The G1 phase corresponds to the interval between:
  11. Q11. Mitosis in most animals is usually restricted to:
  12. Q12. During which phase does the cell grow and carry out normal metabolism but does not replicate its DNA?
  13. Q13. A cell in the G0 stage is said to be:
  14. Q14. How many minutes does the cell cycle of yeast typically take to complete?
  15. Q15. The 'M' in M phase stands for:
  16. Q16. Which phase is characterized by the duplication of the cell's organelles and increase in cytoplasm, but not DNA?
  17. Q17. The decision for a cell to divide is primarily made in which phase?
  18. Q18. Which of the following describes the G2 phase correctly?
  19. Q19. Interphase is often called the 'resting phase' because:
  20. Q20. In which stage of the cell cycle are tubulin proteins synthesized?