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Cell Cycle and Cell Division

NEET 2016 (Phase 1)MCQMedium📈 Topic in 50% papers+4−1
Ques. 1NEET 2016 (Phase 1)

Spindle fibres attach on to

  1. centromere of the chromosome
  2. kinetosome of the chromosome
  3. telomere of the chromosome
  4. kinetochore of the chromosome.

Answer

(4) kinetochore of the chromosome.

Solution

As per NCERT, the centromere bears small disc-shaped structures on its sides called kinetochores.

⇒ These kinetochores serve as the sites of attachment of spindle fibres (formed by the chromosomes) during metaphase.

∴ Spindle fibres attach to the kinetochore of the chromosome.

Answer: (4)

Keep practising — Cell Cycle and Cell Division

Ques. 2NEET 2016 (Phase 1)

Which of the following is not a characteristic feature during mitosis in somatic cells?

  1. Chromosome movement
  2. Synapsis
  3. Spindle fibres
  4. Disappearance of nucleolus
Ques. 3NEET 2016 (Phase 1)

In meiosis crossing over is initiated at

  1. zygotene
  2. diplotene
  3. pachytene
  4. leptotene.
Ques. 4NEET 2016 (Phase 2)

During cell growth, DNA synthesis takes place on

  1. S-phase
  2. G1-phase
  3. G2-phase
  4. M phase
Ques. 5NEET 2016 (Phase 2)

When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

  1. G1/S
  2. G2/M
  3. M
  4. Both G2/M and M
Ques. 6NEET 2016 (Phase 2)

Match the stages of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below.

  1. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
  2. (a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)
  3. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
  4. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
Ques. 7AIPMT 2015

Arrange the following events of meiosis in correct sequence (i) Crossing over (ii) Synapsis (iii) Terminalisation of chiasmata (iv) Disappearance of nucleolus

  1. (i), (ii), (iii), (iv)
  2. (ii), (iii), (iv), (i)
  3. (ii), (i), (iv), (iii)
  4. (ii), (i), (iii), (iv)
Ques. 8AIPMT 2015 (Cancelled)

A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has

  1. twice the number of chromosomes and four times the amount of DNA
  2. four times the number of chromosomes and twice the amount of DNA
  3. twice the number of chromosomes and twice the amount of DNA
  4. same number of chromosomes but twice the amount of DNA.
Ques. 9AIPMT 2015 (Cancelled)

Select the correct option.

  1. (A) - (i); (B) - (ii); (C) - (v); (D) - (iv)
  2. (A) - (ii); (B) - (iii); (C) - (iv); (D) - (v)
  3. (A) - (ii); (B) - (i); (C) - (iii); (D) - (iv)
  4. (A) - (ii); (B) - (iii); (C) - (v); (D) - (iv)
Ques. 10AIPMT 2014

During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?

  1. G0 and G1
  2. G1 and S
  3. Only G2
  4. G2 and M
Ques. 11AIPMT 2014

In 'S' phase of the cell cycle

  1. amount of DNA doubles in each cell
  2. amount of DNA remains same in each cell
  3. chromosomes number is increased
  4. amount of DNA is reduced to half in each cell.

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