NEET BIOLOGY

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BIOLOGICAL CLASSIFICATION

VIROIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
1998 Diseases that attack the central nervous system of livestock, such as cattle and sheep. The disease first appeared in England and most of Europe. Gla cow disease is a disease caused by ____
A
Prions and Viroids
B
Viroid
C
Virus rabies
D
Tape
E
Handling error
Explanation: 

Detailed explanation-1: -BSE belongs to a family of diseases known as transmissible spongiform encephalopathies (TSEs). In addition to BSE, the TSEs include, among others, scrapie in sheep and goats, chronic wasting disease in deer and elk, transmissible mink encephalopathy, and Creutzfeldt-Jakob disease (CJD) in humans.

Detailed explanation-2: -Creutzfeldt-Jakob disease (CJD) is a rapidly progressive, invariably fatal neurodegenerative disorder believed to be caused by an abnormal isoform of a cellular glycoprotein known as the prion protein.

Detailed explanation-3: -A common sign of BSE in cows is incoordination. A sick cow has trouble walking and getting up. A sick cow may also act very nervous or violent, which is why BSE is often called “mad cow disease.”

Detailed explanation-4: -Variant Creutzfeldt-Jakob disease (vCJD) is a prion disease that was first described in 1996 in the United Kingdom.

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