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

Senescence, Senescence Plants begin their development after seed germi...

Senescence Plants begin their development after seed germination. They grow, flower and finally senesce and die. The period from the start to death is called the longevity or

External morphology of human heart, EXTERNA L MORPHOLOGY - Auricle ...

EXTERNA L MORPHOLOGY - Auricle 2 in number at broad area. Both are small, flap like cover ventricles like caps i.e. auricular appendix . It's skeleton is made up of mus

Describe the epithelial cells of the kidney proximal tubule, Epithelial cel...

Epithelial cells of the kidney proximal tubule ?   A.  The sodium-glucose co-transporter in the luminal membrane is responsible for the net flux of glucose from luminal space to

Explain the process of nucleotide catabolism, Question 1 Write a short not...

Question 1 Write a short note on the following Free Energy Cori cycle Fermentation Pentose phosphate pathway Transamination Allosteric Regulation Qu

Regulation of breathing and blood pressure, Q. Which is the brain region re...

Q. Which is the brain region responsible for the regulation of breathing and blood pressure? The neural regulation of breathing, blood pressure and other physiological paramete

Motor control in annelids and arthropods, Motor Control in Annelids and Art...

Motor Control in Annelids and Arthropods In annelids and arthropods generally, individual metameric ganglia of the ventral nerve cord are capable of initiating and keep locomo

How genetic predisposition causing the underweight, How Genetic Predisposit...

How Genetic Predisposition causing the underweight? Mother's Health Status; Poor nutritional status of the girl child coupled with under nutrition during pregnancy results in L

Change in structure of a protein, Q. Is it expected that a change in the pr...

Q. Is it expected that a change in the primary, in the secondary or in the tertiary structure of a protein will produce furthermore functional consequences? Any change of the p

Other complications in prosthetic valves, Other Complications :  Bioprosth...

Other Complications :  Bioprosthetic valves have a tendency for degeneration, calcification or cusp perforation. Current models have overcome many of these problems. Calcification

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