Cytoplasmic reorganisation, Biology

Assignment Help:

Cytoplasmic Reorganisation

Meiosis is also associated with major reorganisation of the cytoplasm of MMCs and microspores. Microspore mother cell shows high metabolic activity. As meiosis is initiated, the synthetic activity of the cell is reduced. The rate of synthesis of RNA and proteins is drastically reduced. The cell goes through dedifferentiation. The ribosome population of the cell comes down significantly. Even the mitochondria and plastids undergo dedifferentiation, that is, they lose most of the internal membrane system and become spherical bag-like structures. However, small pockets of cytoplasm (consisting 10-20 percent of the total cytoplasm) gets enclosed by membranes and these pockets do not undergo the reorganisation that occurs in the remaining part-of the cytoplasm. Towards the end of meiosis, the microspores restore the synthetic activity. The synthesis of RNA and proteins is initiated, the ribosome population of the cell is restored and the mitochondria and plastids re-differentiate to their normal configuration with internal membrane system and regain their original shape.


Related Discussions:- Cytoplasmic reorganisation

Explain fluconazole, Fluconazole Fluconazole is active against most  Ca...

Fluconazole Fluconazole is active against most  Candida species other than C. krusei, which is intrinsically resistant, and many strains of C. glabrata, which are increasingly

Explain cell cycle, Q. What is the cell cycle? The Cell cycle, or mitot...

Q. What is the cell cycle? The Cell cycle, or mitotic cycle, is the time period that begins when the cell is finishes and created when it is divided by mitosis creating two dau

Define protein stabilized food emulsions, Define Protein Stabilized Food Em...

Define Protein Stabilized Food Emulsions? Many food products are emulsions (eg. milk cream, ice creams, cream, butter etc.) and protein constituents often play a major role in

Explain the peripheral resistance, Explain the Peripheral Resistance Re...

Explain the Peripheral Resistance Resistance offered by arterioles or resistance vessels, as you have read above, is termed as peripheral resistance. Changes in peripheral resi

Difference between translation and transcription, Q. What is the difference...

Q. What is the difference between translation and transcription? Transcription is the name given to the formation of DNA molecules from an open DNA chain used as a template, Tr

Conjugated proteins, CONJUG A TE D PROTEINS Besides being made of po...

CONJUG A TE D PROTEINS Besides being made of polypeptides, the conjugated proteins posses additional groups, metals or ions. Consists of protein and non-protein parts.

Define the clinical success for the root canal treatment, Define the Clinic...

Define the Clinical success for the Root Canal Treatment a) Absence of pain and swelling. b) Disappearance of sinus tract. c) No evidence of soft tissue destruction, incl

What are classes into which the phylum arthropoda is divide, Q. What are th...

Q. What are the classes into which the phylum Arthropoda is divided? What are the three major ones and some of their representative species? The three main classes of arthropod

Sheep-pox, Sheep-pox Sheep-pox, a highly contagious disease, causes a m...

Sheep-pox Sheep-pox, a highly contagious disease, causes a mortality of 20 to 50% in animals below the age of 6 months. It also causes damage to the wool and skin in adults. Of

Explain sinus venosus defect with partial anomalous venous, Explain Sinus V...

Explain Sinus Venosus Defect with Partial Anomalous Venous Connection ? In this defect the atrial septal defect is situated just below the orifice of superior vena cava above

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