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Mitosis (Medical Entrance)

Questions covering mitotic phases, structures, and processes related to cell division

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

What are kinetochores?

  1. The place where mitotic spindle fibres attach to centrioles.
  2. The place where mitotic spindle attaches to chromosomes.
  3. The place where both chromatids are attached to each other.
  4. The fibres which originate from centrioles and form spindle.
Question 2 Multiple Choice (Single Answer)

Which of the following events does not occur in anaphase?

  1. Division of centromere.
  2. The daughter chromosomes begin moving towards opposite poles of the cell due to the action of the spindle.
  3. Chromosomes arrange themselves at equatorial plane.
  4. Complete set of chromosomes assembles at each pole of the cell.
Question 3 Multiple Choice (Single Answer)

During which phase do the contents of the nucleus and cytoplasm divide?

  1. G1 phase
  2. G2 phase
  3. M phase
  4. S phase
Question 4 Multiple Choice (Single Answer)

The end of M-phase is marked by

  1. end of telophase
  2. end of cytokinesis
  3. end of cell cycle
  4. end of interphase
Question 5 Multiple Choice (Single Answer)

Disintegration of nuclear envelope takes place at

  1. prometaphase
  2. early anaphase
  3. prophase
  4. metaphase
Question 6 Multiple Choice (Single Answer)

The lost arm of a starfish can be regenerated by

  1. meiosis
  2. mitosis
  3. meiosis and mitosis
  4. binary fission
Question 7 Multiple Choice (Single Answer)

Which phase exists in nerve cells at maturity?

  1. G2
  2. G1
  3. G0
  4. S
Question 8 Multiple Choice (Single Answer)

Nuclear membrane remains intact during mitosis in

  1. fungi
  2. dinoflagellates
  3. Both (1) and (2)
  4. bacteria
Question 9 Multiple Choice (Single Answer)

During which phase does mitotic spindle formation initiate?

  1. Preprophase
  2. Prophase
  3. Prometaphase
  4. Metaphase
Question 10 Multiple Choice (Single Answer)

Which protein binds two identical sister chromatids at centromere?

  1. Securin
  2. Separase
  3. Cohesin
  4. Condensin
Question 11 Multiple Choice (Single Answer)

During which phase do sister chromatids become full-fledged chromosomes?

  1. Telophase
  2. Anaphase
  3. Prometaphase
  4. Metaphase
Question 12 Multiple Choice (Single Answer)

When does kinetochore formation take place?

  1. Metaphase
  2. Prometaphase
  3. Anaphase
  4. Prophase
Question 13 Multiple Choice (Single Answer)

In telophase, nuclear envelope is formed and the chromosomes uncoil. What does this appear to be?

  1. Reverse of prophase
  2. Initiation of cytokinesis
  3. Initiation of meiosis
  4. End of cell cycle
Question 14 Multiple Choice (Single Answer)

Which of the following sentences is incorrect?

  1. The nucleolus disappears during early prophase.
  2. Centrosomes are essential for spindle formation.
  3. A single centromere is inherited by a cell during cell division.
  4. Centrosomes polymerise a protein called tubulin to help form the microtubule apparatus.
Question 15 Multiple Choice (Single Answer)

What are the percent-wise durations of the four steps of M-phase in cell cycle?

Prophase (P)
Metaphase (M)
Anaphase (A)
Telophase (T)

  1. P - 3% M - 4% A - 1% T - 2%
  2. P - 1% M - 4% A - 3% T - 2%
  3. P - 3% M - 2% A - 1% T - 4%
  4. P - 2% M - 4% A - 1% T - 3%
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