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

Life cycle of parasite - protozoan, Life cycle of Parasite - Protozoan ...

Life cycle of Parasite - Protozoan The life cycle of the parasite in man begins when an infected mosquito, while biting and taking a blood meal, injects sporozoites into the

Describe the result of pulmonary embolism, Describe the result of Pulmonary...

Describe the result of Pulmonary Embolism? Results :  The mortality in different series is reported between 3 and 36 per cent. In haemodynamically unstable patients this coul

Sample titration - estimation of nitrogen & protein content, Define Sample ...

Define Sample Titration - Estimation of nitrogen and protein content? Take the given ammonium sulfate solution into a 100 ml volumetric flask and dilute to the mark with distil

Explain the term chemical score, Explain the term Chemical Score? Since...

Explain the term Chemical Score? Since egg proteins contain all essential amino acids in adequate amounts and possess the highest nutritive value among dietary proteins, Block

Define the interaction of vitamin c with iron, Define the Interaction of Vi...

Define the Interaction of Vitamin C with iron? Ascorbic acid powerfully enhances absorption of non- haem iron and reverses the inhibiting effect of tea and calcium phosphate. I

Translation in eukaryotes, Transcription in eukaryotes, a much more complex...

Transcription in eukaryotes, a much more complex procedure than in prokaryotes. In the eukaryotes, translation and transcription take place in several cellular compartments that ar

Skeletal system - skull, SKULL- Present in head region. It is suppor...

SKULL- Present in head region. It is supported on the top of vertebral column. It is made up of the hardest and denest bones in the human body. It consists of cranium

Which disease is associated with rapid dehydration, Which disease is associ...

Which disease is associated with the following symptoms? Sudden onset of profuse watery stool followed by vomiting, rapid dehydration and muscular cramps?

What type of selection is being demonstrated, If a cow develops a preferenc...

If a cow develops a preference for eating white four o'clock flowers and ignoring pink and red four o'clock flowers, what type of selection is being demonstrated? Would the cow eve

Define the functionality of cellulose, Functionality of cellulose Cellu...

Functionality of cellulose Cellulose has many uses as an anticaking agent, emulsifier, stabilizer, dispersing agent, thickener and gelling agent, but these are generally subsid

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