Practice Test Sets (Total Questions: 100)

Topic Practice: Cell Cycle and Cell Division (Test - 1)

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About Cell Cycle and Cell Division MCQ

Master Cell Cycle and Cell Division for NEET UG with chapter-wise MCQs, phases of mitosis and meiosis, and high-yield questions to secure top scores in biolo…

This Cell Cycle and Cell Division MCQ practice set is designed for students preparing for school exams and competitive exams. It contains 100 multiple choice questions divided into 2 test sets of up to 50 questions each. Every question has four options, and after answering you can see the correct option, a detailed explanation and how other users answered.

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Sample Cell Cycle and Cell Division Questions

Statement-Based: Statement I: During the S phase of interphase, the amount of DNA per cell doubles from 2C to 4C, while the chromosome number remains unchanged (2n). Statement II: In animal cells, during the S phase, DNA replication begins in the nucleus, and the centriole duplicates in the cytoplasm.
- A. Both Statement I and Statement II are incorrect
- B. Both Statement I and Statement II are correct
- C. Statement I is correct but Statement II is incorrect
- D. Statement I is incorrect but Statement II is correct
Assertion-Reason: Assertion (A): Cells in the G0 phase (quiescent stage) remain metabolically active but no longer proliferate unless called on to do so depending on the requirement of the organism. Reason (R): G0 cells exit the cell cycle at the end of G1 phase and enter an inactive stage where protein synthesis completely ceases.
- A. (A) is true but (R) is false
- B. Both (A) and (R) are true and (R) is the correct explanation of (A)
- C. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
- D. (A) is false but (R) is true
If a diploid cell has 4C content of DNA and 2n=16 chromosomes at the end of S phase, what will be the DNA content and chromosome number in each cell after completion of Meiosis I and Meiosis II respectively?
- A. After Meiosis I: 1C, n=8 ; After Meiosis II: 0.5C, n=4
- B. After Meiosis I: 4C, n=16 ; After Meiosis II: 2C, n=8
- C. After Meiosis I: 2C, 2n=16 ; After Meiosis II: 1C, n=4
- D. After Meiosis I: 2C, n=8 ; After Meiosis II: 1C, n=8
Multiple Statement Question: Which of the following events occur during the G1 phase (Gap 1) of interphase? (i) Cell is metabolically active and continuously grows. (ii) Synthesis of RNA and proteins required for cell growth. (iii) Duplication of centrioles in cytoplasm. (iv) Replication of nuclear DNA. Select the CORRECT combination:
- A. (iii) and (iv) only
- B. (i), (ii), and (iii) only
- C. (i) and (ii) only
- D. All (i), (ii), (iii), and (iv)
A human cell in culture takes approximately 24 hours to complete one cell cycle. What is the approximate duration spent in Interphase vs M phase?
- A. Interphase lasts more than 95% of the total duration (~23 hours), while M phase lasts less than 1 hour
- B. Interphase lasts 12 hours, while M phase lasts 12 hours
- C. Interphase lasts 5 hours, while M phase lasts 19 hours
- D. Interphase and M phase take equal time of 12 hours each

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