Determine about the microtubules, Biology

Assignment Help:

Determine about the microtubules

The microtubules are hollow tubular structures formed by a special arrangement of two proteins called the alpha and beta tubulins. The microtubules play a leading role during cell division. At that time the chromosomes attached to the mitotic spindle, composed of microtubular fibres, move apart due to contractions of the microtubule proteins. The motility of eukaryotic cells, the movement of flagella and cilia, the movement of the microvilli of the intestinal brush border cells, are all associated with microtubules. The movement of leukocytes in the blood stream and the transport of molecules along the axonal fibres are also due to contractions of the proteins constituting the microtubules. The cytoskeleton is, thus, an important structured feature of the cell, which is essential for the various kinds of movements associated with the cell and its internal structures. This is achieved by the special proteins that constitute the cytoskeleton, by a process of polymerisation and depolymerisation, resulting in changes in shape and thus resulting in movement.

 

 


Related Discussions:- Determine about the microtubules

Explain photosynthetic prokaryotes and mitochondria, What evidence strength...

What evidence strengthens the hypothesis that chloroplasts could have been photosynthetic prokaryotes and mitochondria could have been aerobic prokaryotes? In fact that the chl

Explain effect of irradiation on nutrients, Normal 0 false fa...

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

How are reptilia characterized, Q. Class Reptilia identity card. How are th...

Q. Class Reptilia identity card. How are they characterized according to examples of representing beings, basic morphology, skin, respiration, circulation, nitrogen waste, thermal

What is the estimated percentage of water in the human body, What is the es...

What is the estimated percentage (in mass) of water in the human body? Is this percentage expected to be larger in the adult or in the old individual? About 65% of the human in

How do the repairing enzymes of the genetic system act, How do the repairin...

How do the repairing enzymes of the genetic system act? There are enzymes inside the cells that detect errors or alterations in DNA molecules and begin a repair of those errors

Explain the maximum containment laboratory, >>>>Write a short note on the f...

>>>>Write a short note on the following- Question 1 Centrism in Bioethics Question 2 Bio Safety check list Question 3 Enforcement of IPRs Question 4 T

Ventilation of tracheal system – passive suction ventilation, Ventilation o...

Ventilation of Tracheal System – Passive Suction Ventilation Many active insects and insects that live in environments where water is scarce cannot depend on diffusion alone t

Neurochemistry of attention, Neurochemistry of Attention Different neur...

Neurochemistry of Attention Different neurotransmitters systems are implicated in attention. Cholinergic, dopaminergic and serotonergic systems play major roles in neurochemica

Major information storage molecule, Following statement true for prokaryoti...

Following statement true for prokaryotic or eukaryotic? They use deoxyribonucleic acid as their major information storage molecule.

Explain dose-scaling, Dose-scaling Toxicological equivalent doses in a...

Dose-scaling Toxicological equivalent doses in animals and humans are a debatable issue. The Joint FAOIWHO Expert Committee on Food Additives (JECFA) and Joint FA01 WHO Meetin

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