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

What is oxidized starch and starch acetates, Oxidized starch Coating an...

Oxidized starch Coating and sealing  agent, emulsifier, dough conditioner for bread, binding agent as gum Arabic replacer, lemon curd manufacture, salad cream, mayonnaise.

State about intra oral periapical radiographs, Intra Oral Periapical Radiog...

Intra Oral Periapical Radiographs These can either be taken conventionally or by the help of RVG (RADIO VISUO GRAPHY).  RVG offers certain benefits over conventional X-Rays suc

Class of coclentrata, ????? # 100 ??????????? #Minimum ?????? ?????

????? # 100 ??????????? #Minimum ?????? ?????

Explain pregnancy and diabetes mellitus, Explain Pregnancy and Diabetes Mel...

Explain Pregnancy and Diabetes Mellitus? During pregnancy, a woman who has pre-existing chronic disease requires special care, especially in case of mother's suffering from dia

Development of nutritional biochemistry, Development of Nutritional Biochem...

Development of Nutritional Biochemistry Nutrition,  in  general, and  particularly nutritional biochemistry, has  traveled a  long way since 1926, when nutrition was first reco

Explain the composition of sabouraud agar - culture media, Explain the Comp...

Explain the Composition of Sabouraud Agar? Sabouraud agar is used for cultivation of yeasts and moulds. Peptone - 10.0 gm Dextrose - 40.0 gm Agar - 15.0 gm Distille

Explain the reproductive system, Explain the Reproductive System? The h...

Explain the Reproductive System? The human reproductive system produces not only reproductive organs and gametes, but also sex hormones, which have far-reaching effects on huma

Describe about development of sexual maturity in children, Briefly Describe...

Briefly Describe about Development of Sexual Maturity in Children? Sexual maturity develops along with growth spurt in adolescence. In girls, growth stops on attaining menarche

Explain anaerobic nitrogen-fixer, One of the free-living, anaerobic nitroge...

One of the free-living, anaerobic nitrogen-fixer is: 1. Beijernickia 2. Rhodospirillum 3. Rhizobium 4. Azotobacter Rhodospirillum

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