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Cell Cycle and Cell Division · Question 74

AIPMT 2000MCQEasy📈 Topic in 62% papers+4−1
1

In which stage of cell cycle, DNA replication occurs?

  1. G1-phase
  2. S-phase
  3. G2-phase
  4. M-phase

Answer

(2) S-phase

Solution

As per NCERT, interphase is divided into G1 phase, S phase (synthesis) and G2 phase.

⇒ S or synthesis phase marks the period during which DNA synthesis or replication takes place; the amount of DNA per cell doubles (2C → 4C), but the chromosome number does not change.

∴ DNA replication occurs in the S-phase.

Answer: (2)

AIPMT 2000

Keep practising — Cell Cycle and Cell Division

2

Match List I with List II :

  1. A-III, B-IV, C-I, D-II
  2. A-IV, B-I, C-II, D-III
  3. A-I, B-II, C-III, D-IV
  4. A-II, B-III, C-IV, D-I
NEET (UG) 2026
3

In which animal do haploid cells divide mitotically to produce gametes ?

  1. Male honeybees
  2. Male grasshoppers
  3. Male earthworms
  4. Male frogs
NEET (UG) 2026
4

Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below:

  1. Statement I is incorrect, but Statement II is true
  2. Both Statement I and Statement II are true
  3. Both Statement I and Statement II are false
  4. Statement I is correct, but Statement II is false
RE-NEET (UG) 2026
5

The correct sequence of adult cell cycle phases is .

  1. S-M-G2-G1
  2. G1-G2-S-M
  3. G1-M-G2-S
  4. G1-S-G2-M
RE-NEET (UG) 2026
6

What is the main function of the spindle fibers during mitosis?

  1. To repair damaged DNA
  2. To regulate cell growth
  3. To separate the chromosomes
  4. To synthesize new DNA
NEET (UG) 2025
7

Spindle fibers attach to kinetochores of chromosomes during

  1. Prophase
  2. Metaphase
  3. Anaphase
  4. Telophase
NEET (UG) 2024
8

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below:

  1. Both Statement I and Statement II are true
  2. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Statement I is false but Statement II is true
NEET (UG) 2024
9

Following are the stages of cell division : Choose the correct sequence of stages from the options given below :

  1. C-E-D-A-B
  2. E-B-D-A-C
  3. B-D-E-A-C
  4. E-C-A-D-B
NEET (UG) 2024
10

Match List I with List II : Choose the correct answer from the options given below

  1. A-IV, B-II, C-III, D-I
  2. A-I, B-II, C-IV, D-III
  3. A-II, B-IV, C-I, D-III
  4. A-IV, B-III, C-II, D-I
NEET (UG) 2024
11

Recombination between homologous chromosomes is completed by the end of

  1. Diakinesis
  2. Zygotene
  3. Diplotene
  4. Pachytene
RE-NEET (UG) 2024

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