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Cell Cycle and Cell Division · Question 37

NEET (UG) 2019MCQEasy📈 Topic in 62% papers+4−1
1

Cells in G0 phase:

  1. suspend the cell cycle
  2. terminate the cell cycle
  3. exit the cell cycle
  4. enter the cell cycle

Answer

(3) exit the cell cycle

Solution

As per NCERT, some cells in the adult animals do not appear to exhibit division (e.g., heart cells); cells that do not divide further exit G1 phase to enter an inactive stage called quiescent stage (G0) of the cell cycle.

∴ Cells in G0 phase exit the cell cycle; they remain metabolically active but no longer proliferate unless called on to do so.

Answer: (3)

NEET (UG) 2019

Keep practising — Cell Cycle and Cell Division

2

The correct sequence of phases of cell cycle is:

  1. S G1 G2 M
  2. G1 S G2 M
  3. M G1 G2 S
  4. G1 G2 S M
NEET (UG) 2019
3

The stage during which separation of the paired homologous chromosomes begins is

  1. zygotene
  2. pachytene
  3. diplotene
  4. diakinesis
NEET 2018
4

Which of the following options gives the correct sequence of events during mitosis?

  1. Condensation Nuclear membrane disassembly Arrangement at equator Centromere division Segregation Telophase
  2. Condensation Crossing over Nuclear membrane disassembly Segregation Telophase
  3. Condensation Arrangement at equator Centromere division Segregation Telophase
  4. Condensation Nuclear membrane disassembly Crossing over Segregation Telophase
NEET 2017
5

Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cell. If APC is defective in a human cell, which of the following is expected to occur?

  1. Chromosomes will be fragmented.
  2. Chromosomes will not segregate.
  3. Recombination of chromosome arms will occur.
  4. Chromosomes will not condense.
NEET 2017
6

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.
NEET 2016 (Phase 1)
7

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
NEET 2016 (Phase 1)
8

In meiosis crossing over is initiated at

  1. zygotene
  2. diplotene
  3. pachytene
  4. leptotene.
NEET 2016 (Phase 1)
9

During cell growth, DNA synthesis takes place on

  1. S-phase
  2. G1-phase
  3. G2-phase
  4. M phase
NEET 2016 (Phase 2)
10

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
NEET 2016 (Phase 2)
11

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)
NEET 2016 (Phase 2)

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