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

Biotechnology, Biotechnology: Biotechnology is, perhaps. best define...

Biotechnology: Biotechnology is, perhaps. best defined as the  industrial utilisation  of biological  systems or processes.  In sense, therefore, biote(biology ha existed fo

01.03 new technology, What is the best microscope to get a detailed view of...

What is the best microscope to get a detailed view of the parts inside of a preserved plant cell?

Define errors of number of sex chromosomes of an individual, What are the m...

What are the main diseases caused by errors of the number of sex chromosomes in the cells of an individual? Diseases caused by the abnormal number of sex chromosomes are called

Which cell count elevates in case of allergy or plastic worm, Which cell co...

Which cell count is likely to be elevated when an individual has an allergy or parasitic worms? a) Red blood cells b) Erythrocyte c) Eosinophil (pron: e-o-sin-o-fill)

Regulatory mechanisms, Normal 0 false false false EN-IN...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Vitamin - d, VITAMIN - D Also known as Calciferol / Anti ricket vit...

VITAMIN - D Also known as Calciferol / Anti ricket vitamin / sun shine vitamin. It is necessary for bones & teeth. It is synthesized in presence of UV rays of sunl

What is natural selection, What is natural selection? Natural selection...

What is natural selection? Natural selection is the method by which organisms that have certain favorable traits are better capable to survive and make successfully than organi

Bioenergetics, Energy Cycle  of Living Being Source of energy :All  mat...

Energy Cycle  of Living Being Source of energy :All  matter  locks  energy in the  from of   bonds  between component  molecules and   atoms. This  energy is the chemical  ener

Zoology, Classification of the Phylum Protozoa up to orders

Classification of the Phylum Protozoa up to orders

Ecology, Explain how human activities can cause an imbalance in biogeochemi...

Explain how human activities can cause an imbalance in biogeochemical cycling and lead to problems such as cultural eutrophication and fish kills.

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