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Systematics Viruses Viroids Prions - Questions and Answers

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266. HIV is a retrovirus because its genetic information is carried in
A. DNA instead of RNA
B. DNA
C. RNA instead of DNA
D. Protein coat
Explanation:
267. Bovine spongiform encephalopathy is a disease caused by prions in
A. Cow
B. Sheep
C. Potato
D. Man
Explanation:
268. The lowest category in taxonomic hierarchy is
A. Phylum
B. Subspecies
C. Species
D. Variety
Explanation:
269. Severe Acute Respiratory Syndrome (SARS)
A. Affects nonvegetarians faster than vegetarians
B. Is an acute form of asthma
C. Is caused by a variant of Common Cold Virus (Corona virus)
D. Is caused by a variant of Pneumococcus pneumoniae
Explanation:
270. The agents which are known to cause CJD are
A. Protein particles
B. A class of bacteria
C. A class of viruses
D. Fungi
Explanation:
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