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Cell Cycle and Cell Division · Question 33

NEET (UG) 2020MCQEasy📈 Topic in 62% papers+4−1
1

Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of

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

Answer

(1) G1 phase

Solution

As per NCERT, some cells in the adult animals do not appear to exhibit division (e.g., heart cells) and many other cells divide only occasionally.

The cells that do not divide further exit G1 phase to enter an inactive stage called quiescent stage (G0) of the cell cycle.

Cells in this stage remain metabolically active but no longer proliferate unless called on to do so.

The cell enters G0 at the end of G1 phase.

Answer: (1)

NEET (UG) 2020

Keep practising — Cell Cycle and Cell Division

2

Match the following with respect to meiosis Select the correct option from the following

  1. (A)-(iv), (B)-(iii), (C)-(ii), (D)-(i)
  2. (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
  3. (A)-(i), (B)-(ii), (C)-(iv), (D)-(iii)
  4. (A)-(ii), (B)-(iv), (C)-(iii), (D)-(i)
NEET (UG) 2020
3

Dissolution of the synaptonemal complex occurs during

  1. Diplotene
  2. Zygotene
  3. Pachytene
  4. Leptotene
NEET (UG) 2020
4

Identify the correct statement with regard to G1 phase (Gap 1) of interphase

  1. Cell is metabolically active, grows but does not replicate its DNA.
  2. DNA synthesis or replication takes place.
  3. Nuclear Division takes place.
  4. Reorganisation of all cell components takes place.
NEET (UG) 2020
5

Cells in G0 phase:

  1. suspend the cell cycle
  2. terminate the cell cycle
  3. exit the cell cycle
  4. enter the cell cycle
NEET (UG) 2019
6

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
7

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

  1. zygotene
  2. pachytene
  3. diplotene
  4. diakinesis
NEET 2018
8

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
9

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
10

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)
11

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)

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