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Mitotic spindle is mainly composed of p...

Mitotic spindle is mainly composed of __ proteins.

A

tublin

B

myosin

C

actin

D

actomyosin

Text Solution

Verified by Experts

The correct Answer is:
A
Spindle fibres are structures formed from mictrobubules in the cytoplasm during cell division. Microtubules are made up of tubulin protein. Spindle fiberes move chromatids or chromosomes diametrically apart and gather them in two d=clusters at opposite ends (poles) of the cell.
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NCERT FINGERTIPS-CELL CYCLE AND CELL DIVISION-Cell Cycle And Cell Division
  1. Which of the following statements is correct regarding G(0) phase?

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  2. Best material for studying mitosis in laboratory is

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  3. Mitotic spindle is mainly composed of proteins.

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  4. Microtubules are absent in

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  5. Centrosome undergo duplication during (i) of (ii) and begin to move to...

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  6. is the best stage to count the number and study the morphology of chro...

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  7. is characterised by all the chromosomes coming to lie at the equator, ...

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  8. Read the following statements. (i) In mitotic cell division chromoso...

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  9. You are provided with floral buds of Chrysanthemum in your class and a...

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  10. During karyokinesis, the spindle fibres get attached to condensing chr...

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  11. Identify the structure indicated by labels (i),(ii),(iii) and (iv) and...

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  12. Which of the following statements is not correct regarding colchicine?

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  13. Colchicine is a cell pison which arrests cell division at and can ind...

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  14. Spindle formation can be disrupted by exposing cell to the microtubule...

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  15. At which stage of mitosis, the two daughter chromatids separate from e...

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  16. During anaphasic movements of chromosomes, of each chromosome is/are ...

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  17. Select the correct mathc

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  18. The separation of two chromatids of each chromosome at early anaphase ...

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  19. Match column I with column II and select the correct option from the g...

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  20. Which of the following is key event of anaphase of mitotic division?

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