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

Why do cells of the nephron tubules, Q. Why do cells of the nephron tubules...

Q. Why do cells of the nephron tubules present a great amount of mitochondria? The cells of the tubule wall have high number of mitochondria because many substances are secrete

What body systems respond to resist the changes, Jennifer has the "stomach ...

Jennifer has the "stomach flu" that is going around campus and has been vomiting profusely for the past 24 hours. Not only has she been unable to keep down fluids or food but she h

Living beings are made of organic and inorganic substances, Living beings a...

Living beings are made of organic and inorganic substances. According to the complexity of their molecules how can each of those substances be classified? Inorganic substances

What is the capillarity, What is the capillarity? How this phenomenon chemi...

What is the capillarity? How this phenomenon chemically explained? What is relevance of the capillarity for water transport in plants? The Capillarity is the phenomenon through

Determine the food source for phosphorus, Determine the Food Source for Pho...

Determine the Food Source for Phosphorus? Phosphorus is widely distributed in food. Food phosphorus is a mixture of both organic and inorganic forms although the relative amoun

Median sternotomy approach-types of surgery, Median Sternotomy Approach :  ...

Median Sternotomy Approach :  The preferred approach these days is through a median sternotomy. Pericardiectoiny proceeds in the same way as done through left thoracotomy, by

How many atp molecules are made after glycolysis, Q. How many ATP molecules...

Q. How many ATP molecules are made after glycolysis? Glycolysis is a process similar to glucose degradation in fermentation it produces final balances two molecules of ATP for

How is extracellular digestion related to cellular, How is extracellular di...

How is extracellular digestion related to cellular and tissue specialization? Several of specialized cells and tissues appeared with extracellular digestion to give enzymes and

What are the glucagon receptors in the plasma membranes, Which of the follo...

Which of the following serves as an effector, or as part of an effector, that functions in a negative feedback system? A. Glucagon Receptors in the plasma membranes of alpha-is

Ctenophora.., Ask queAffinities of ctenophora with platyhelminthesstion #Mi...

Ask queAffinities of ctenophora with platyhelminthesstion #Minimum 100 words accepted#

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