Cytosketal mechanism, Biology

Assignment Help:

Cytosketal Mechanism

There are two co-ordinate processes in the cleavage (or cell division) that is displayed in Figure.

Karyokinesis

The mitotic division of nucleus depends on the creation of mitotic spindle that is constituted by microtubules of which the tubulin protein is the structural unit Treatment of the egg along with the drug colchicines disrupts the microtubules and arrests Karyokinesis at metaphase.

1744_Cytosketal Mechanism.png

Figure:  Role of microtubules and microfilaments in cell divisions

Cytokinesis

Division of the cell depends on the contractile microfilaments of which protein actin is the structural unit. A ring of microfilament emerges in the cortex around the cell in which the cleavage furrow is formed. Contraction of the microfilament ring in the purse-string manner deepens the furrow finally cutting the cell into two. Treatment of the egg along with cytochalasin B inhibits the organisation of contractile ring of microfilaments that is why cleavage furrow is not made and cytokinesis does not take place.


Related Discussions:- Cytosketal mechanism

Explain metastatic carcinoma, Explain Metastatic carcinoma Metastatic ...

Explain Metastatic carcinoma Metastatic carcinoma:- Cancer that can be  transferred from one part of the body to other unrelated parts.

What is the genetic family tree, What is the genetic family tree? The G...

What is the genetic family tree? The Genetic family tree is a schematic family tree that shows the biological inheritance of some trait through successive generations. The G

State about membrane-spanning molecule, State about membrane-spanning molec...

State about membrane-spanning molecule Neuron A is a healthy neuron with all the usual ion channels and with all the usual intracellular and extracellular distributions of ion

Bacterial cells, which intracellular organelles are present in bacteria?

which intracellular organelles are present in bacteria?

Write the meaning of hyperglycemia, Q. Write the meaning of Hyperglycemia? ...

Q. Write the meaning of Hyperglycemia? Hyperglycemia is a Greek term: hyper -meaning excessive; glyc - meaning sweet; and emia- means "of the blood". It is a condition in whic

What are colonies and societies, What are colonies and societies? Colon...

What are colonies and societies? Colonies are functional integrated aggregates produced by individuals of the same species. Colonies are often confused with a one individual. E

Enzyme model, allosteric regulation project idea

allosteric regulation project idea

Different phases of spermatogenesis, DIFFERENT PHASES OF SPERMATOGENESIS ...

DIFFERENT PHASES OF SPERMATOGENESIS Spermatogenesis complete into two phases. 1 .       Spermatocytogenesis The entire process can be divided into three phases : (i

Classification of microorganisms, Q. Classification of microorganisms? ...

Q. Classification of microorganisms? The microorganisms use our food as a source of nutrients for their own growth. This, of course can result in deterioration of the food. By

Explain acyclovir, Explain Acyclovir Available in topical, oral, and in...

Explain Acyclovir Available in topical, oral, and intravenous (IV) formulations, acyclovir is used to treat herpes simplex virus (HSV) and varicella-zoster virus (VZV) infectio

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd