Mitosis (Medical Entrance) Online Test

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Description: proteins
Number of Questions: 15
Created by: Prabha Kade
Tags: mitosis kinetochores chromatids Mitosis Chemistry

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What are kinetochores?

Which of the following events does not occur in anaphase?

Division of centromere.
The daughter chromosomes begin moving towards opposite poles of the cell due to the action of the spindle.
Chromosomes arrange themselves at equatorial plane.
Complete set of chromosomes assembles at each pole of the cell.

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

The end of M-phase is marked by

Disintegration of nuclear envelope takes place at

The lost arm of a starfish can be regenerated by

Which phase exists in nerve cells at maturity?

Nuclear membrane remains intact during mitosis in

During which phase does mitotic spindle formation initiate?

Which protein binds two identical sister chromatids at centromere?

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

When does kinetochore formation take place?

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

Which of the following sentences is incorrect?

The nucleolus disappears during early prophase.
Centrosomes are essential for spindle formation.
A single centromere is inherited by a cell during cell division.
Centrosomes polymerise a protein called tubulin to help form the microtubule apparatus.

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

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

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