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Cell Cycle and Cell Division · Question 63

AIPMT 2011 (Prelims)MCQEasy📈 Topic in 50% papers+4−1
1

Select the correct option with respect to mitosis.

  1. Chromatids separate but remain in the centre of the cell in anaphase
  2. Chromatids start moving towards opposite poles in telophase
  3. Golgi complex and endoplasmic reticulum are still visible at the end of prophase
  4. Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase

Answer

(4) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase

Solution

∵ In anaphase the sister chromatids separate and move towards opposite poles ⇒ (1) is wrong.

∵ In telophase the chromosomes have already reached the poles and decondense ⇒ (2) is wrong.

∵ At the end of prophase the Golgi complex, endoplasmic reticulum, nucleolus and nuclear envelope are no longer seen ⇒ (3) is wrong.

As per NCERT, in metaphase the chromosomes are moved to the spindle equator and aligned along the metaphase (equatorial) plate ⇒ (4) is correct.

Answer: (4)

AIPMT 2011 (Prelims)

Keep practising — Cell Cycle and Cell Division

2

During mitosis, ER and nucleolus begin to disappear at

  1. late prophase
  2. early metaphase
  3. late metaphase
  4. early prophase
AIPMT 2010 (Prelims)
3

Which stages of cell division do the following figures A and B represent respectively? [Figure]

  1. A Prophase, B Anaphase
  2. A Metaphase, B Telophase
  3. A Telophase, B Metaphase
  4. A Late anaphase, B Prophase
AIPMT 2010 (Prelims)
4

Synapsis occurs between

  1. mRNA and ribosomes
  2. spindle fibres and centromere
  3. two homologous chromosomes
  4. a male and a female gamete
AIPMT 2009
5

Given below is a schematic break-up of the phases/stages of cell cycle. Which one of the following is the correct indication of the stage/phase in the cell cycle? [figure]

  1. C - karyokinesis
  2. D - synthetic phase
  3. A - cytokinesis
  4. B - metaphase
AIPMT 2009
6

At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell?

  1. During G2 stage of prophase
  2. During S-phase
  3. During entire prophase
  4. During telophase
AIPMT 2005
7

Centromere is required for -

  1. Crossing over
  2. Movement of chromosomes towards poles
  3. Transcription
  4. Cytoplasmic cleavage
AIPMT 2005
8

In the somatic cell cycle

  1. in G1 phase DNA content is double the amount of DNA present in the original cell
  2. DNA replication takes place in S phase
  3. a short interphase is followed by a long mitotic phase
  4. G2 phase follows mitotic phase
AIPMT 2004
9

If you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?

  1. Metaphase
  2. Telophase
  3. Anaphase
  4. Prophase
AIPMT 2004
10

Which one of the following precedes reformation of the nuclear envelope during M phase of the cell cycle?

  1. Decondensation from chromosomes, and reassembly of the nuclear lamina
  2. Transcription from chromosomes, and reassembly of the nuclear lamina
  3. Formation of the contractile ring, and formation of the phragmoplast
  4. Formation of the contractile ring, and transcription from chromosomes
AIPMT 2004
11

Mitotic spindle is mainly composed of which protein?

  1. Actin
  2. Myosin
  3. Tubulin
  4. Myoglobin
AIPMT 2002

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