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

Nutrition, The oxidation of sugar in the cell of higher organisms takes pla...

The oxidation of sugar in the cell of higher organisms takes place in the ?

What fraction of the total number of possible, Assuming that all human prot...

Assuming that all human proteins are 300 amino acids long, what fraction of the total number of possible different proteins is found in the human body?

How do hormonal tests to detect pregnancy work, Q. How do hormonal tests to...

Q. How do hormonal tests to detect pregnancy work? Laboratory tests to detect pregnancy commonly test for human chorionic gonadotropin (HCG) concentration in urine or blood sam

Define the term- brain circuitry underlying addiction, Define the term- bra...

Define the term- brain circuitry underlying addiction By unraveling brain circuitry underlying addiction, scientists have identified new targets for therapies which might quell

Explain properties of colloidal systems - electric charge, Electric Charge ...

Electric Charge - Properties of Colloidal Systems Colloidal particles are electrically charged. Some colloidal particles carry a positive charge (+), others a negative charge (

Laboratory tests - evaluation of heart failure, Routine blood tests like ha...

Routine blood tests like haemoglobin, creatinine, electrolytes are useful to plan treatment. More recently the blood natriuretic peptide levels have been used to assess heart failu

Patterns of ageing and death, Patterns of Ageing and Death Plants and...

Patterns of Ageing and Death Plants and their parts develop continuously from germination until death. The latter part of the developmental process, which leads from maturity

Compare and contrast the effect of a deletion, Compare and contrast the eff...

Compare and contrast the effect of a deletion in the operator of the lactose operon with one in the operator of the histidine operon.

Renal insufficiency, CHF complicating IE is primarily the result of valve d...

CHF complicating IE is primarily the result of valve destruction or distortion or rupture of chordae tendinae. Intracardiac fistulas, myocarditis, or coronary artery embolization m

Types of mental disorder, TYPES OF MENTAL DISORDER - 1 .       Psycho...

TYPES OF MENTAL DISORDER - 1 .       Psychosis 2 .       Neurosis 3.       Personality & character disorders 1 .       PSYCHOSIS - It effects mental capa

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