Question 1
Human BK virus belongs to the family ____________
A. parvoviridae
B. reoviridae
C. papovaviridae
D. adenoviridae
View Answer
Answer: Option C
Explanation:
The human BK virus belongs to the family papovaviridae. Papovaviridae is split into Papillomaviridae and Polyomaviridae and is no longer used in the recent taxonomy. Specifically, the BK virus belongs to the family Polyomaviridae.
Question 2
Kemerovo virus belongs to the genus ____________
A. Orbivirus
B. Coltivirus
C. Reovirus
D. Alphavirus
View Answer
Answer: Option A
Explanation:
Kemerovo virus belongs to the genus Orbivirus which is a member of the Reoviridae family in subfamily Sedoreovirinae. It can infect and replicate within the wide range of arthropod and vertebrate hosts.
Question 3
Sicilian virus belongs to the family _____________
A. Bunyaviridae
B. Rhabdoviridae
C. Filoviridae
D. Togaviridae
View Answer
Answer: Option A
Explanation:
Sicilian virus belongs to the family Bunyaviridae. Rift Valley fever virus, Uukuniemi virus, Sandfly fever virus are other viruses belonging to the Bunyaviridae family. It causes Sandfly fever.
Question 4
The binomial nomenclature rules to write the genus name always first.
A. True
B. False
View Answer
Answer: Option A
Explanation:
The rules of binomial nomenclature includes: The two-name parts must be written in italics or underlined if handwritten, the genus name is always written first and then followed by species name, the genus name must be capitalized and species epithet is never capitalized.
Question 5
The order is the largest taxonomic group.
A. True
B. False
View Answer
Answer: Option A
Explanation:
Order is the largest taxonomic group that is followed by family, subfamily, genus, and species. For example, T4-like viruses belong to the Caudovirales order and Myoviridae family.
Question 6
The order of enterobacteria phage T4 is _____________
A. Mononegavirales
B. Caudovirales
C. Nidovirales
D. Tymovirales
View Answer
Answer: Option B
Explanation:
The order of enterobacteria phage T4 is Caudovirales. They are the group I viruses placed in the Baltimore scheme classification. The viruses have double-stranded DNA genomes and are also called as tailed bacteriophages.
Question 7
The suffix used for subfamily is ____________
A. virales
B. viridae
C. virinae
D. virus
View Answer
Answer: Option C
Explanation:
The suffix used for taxonomic group ‘subfamily’ is virinae. For example, comovirus, nepovirus, etc. are placed under the Comovirinae subfamily. Virales is used for the order, viridae is used for family, and the virus is used for the genus.
Question 8
Which of the following virus belongs to Nidovirales order?
A. SARS
B. HIV
C. Measles virus
D. HPV
View Answer
Answer: Option A
Explanation:
Severe Acute Respiratory Syndrome (SARS) virus belongs to the Nidovirales order. SARS virus infection may result in acute respiratory distress or severe breathing difficulty or sometimes death.
Question 9
Which of the following virus contains dsDNA with enveloped virions?
A. Adenovirus
B. Human JC virus
C. Human BK virus
D. Yabapox virus
View Answer
Answer: Option D
Explanation:
Yabapox virus is a virus that contains a double-stranded DNA genome with enveloped virions. It is a tumor virus that caused the formation of tumors on the bodies of the monkeys. Human JC virus, BK virus, and adenovirus contains double-stranded DNA with non-enveloped virions.
Question 10
Which of the following virus contains ssRNA genome and enveloped virions without DNA step in the replication cycle?
A. Sindbis virus
B. HTLV-1
C. Human foamy virus
D. HIV
View Answer
Answer: Option A
Explanation:
Sindbis virus contains ssRNA genome and enveloped virions without DNA step in the replication cycle. It belongs to the Togaviridae family and it causes sindbis fever in humans. HTLV-1, Human foamy virus, and HIV contain ssRNA genome and enveloped virions with DNA in the replication cycle.
Question 11
Which of the following virus contains the dsRNA genome?
A. Colorado tick fever virus
B. Human coronavirus
C. Vesicular stomatitis virus
D. Ebola virus
View Answer
Answer: Option A
Explanation:
Colorado tick fever virus possesses a double-stranded RNA genome. It is transmitted from the bite of an infected Rocky Mountain wood tick. Ebola virus, vesicular stomatitis virus, and human coronavirus possesses a single-stranded RNA genome.