Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Viriods and Prions
Viroids
In 1971, T.O.Diener reported that the spinde tuber disease of potato causing gnarling and cracking of the tuber, is caused by multiplication of a pathogen much smaller than viruses and present in tuber cells themselves, This pathogen found to be a free short and circular RNA strand of about 300nucleotides. Diener named it viroid. It was found that viroids are infectious because, after multiplying in a plant cell, these disperse in the tissue and invade new cells. About a dozen plant diseases have since been shown to be caused by viroids.it is also possible that the causative agents of some more plant and animals diseases turn out to be viroides.
Prions
While searching for the cause of a mental disease kuru widespread in a tribe of New Guinea, D,C Gajdusek(1968) discovered that the disease is caused by a slow virus infection. He shared the 1976 Nobel Prize this work. Later he suspected that other neurological disorders. Like mad cow disease in cows and human dementia and Parkinson disease might also be of this category, Prisoner (1985) speculated that Creulzfeldt Jacob disease extremely minute (4-6 nm in diameter ) protein particles which are coded by the genome of certain brain cells, and act as infectious pathogens, These particles have been named prions.
Alterations occurring in nuts and oilseeds Some oilseeds have acquired a great significance in the large-scale industrial production of edible oils. You have already studied t
What is Resection and Primary End to End Anastomosis ? For neonates and infants the best operation is resection of coarctation and primary end-to-end anastomosis. With the baby
Explain Re- pera at ions and Other Interventions ? These are required for residual VSD with significant shunt, residual RV obstruction and pulmonary valve regurgitation in a fe
composition formation and circulation of lymph
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
Which terrestrial vertebrate group is extremely rare in deserts? The Amphibians are terrestrial vertebrates very rare in desert environments (although there are a few species a
Q. What is the name of the sea anemones and larva of corals? What is the biological importance of that larval stage? Sexual reproduction in sea anemones and corals have a larva
Explain in brief about the ciliary muscle During accommodation the ciliary muscle contracts and in turn the size of the ciliary ring is reduced. This results in the suspensory
Concerning tissue complexity how different are cnidarians from poriferans? Cnidarians have true tissue differentiation, they present separate organized tissues in the body. Por
Hydration Properties General conformation of individual proteins in solution is largely dependent on the interaction with water. The progressive hydration of proteins startin
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd