Numerical: Cell Cycle Timing
Mediumbiology
A cell cycle totals 20 hours: G1=9h, S=6h, G2=3h. How long does M phase last?
Select the correct option:
Solution
Incorrect! Answer:
2 hours
- Interphase Components: The total time spent in interphase is the sum of G1,S, and G2 phases.
- Interphase Time=9 hrs(G1)+6 hrs(S)+3 hrs(G2)=18 hrs.
- Total Cycle: The whole cell cycle includes Interphase and the M (Mitotic) phase.
- Total Time=Interphase+M phase.
- Calculation:
- 20 hrs=18 hrs+M phase.
- M phase=2 hrs.
- Conclusion: The Mitotic phase lasts for 2 hours.
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About This Question
- Subject
- biology
- Chapter
- cell structure and function
- Topic
- numerical: cell cycle timing
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
2 hours
- Interphase Components: The total time spent in interphase is the sum of G1,S, and G2 phases.
- Interphase Time=9 hrs(G1)+6 hrs(S)+3 hrs(G2)=18 hrs.
- Total Cycle: The whole cell cycle includes Interphase and the M (Mitotic) phase.
- Total Time=Interphase+M phase.
- Calculation:
- 20 hrs=18 hrs+M phase.
- M phase=2 hrs.
- Conclusion: The Mitotic phase lasts for 2 hours.
This medium difficulty biology question is from the chapter cell structure and function, covering the topic of numerical: cell cycle timing. It appeared in the 2025 exam.
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