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Viruses (GATE)

Description: Microbiology
Number of Questions: 15
Created by:
Tags: Microbiology Virus Disease Genetics Microbial diversity GATE Life sciences Viral disease Infections DNA RNA Human health Pathogens Human Diseases Caused by Viruses Viruses and Their Classification
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Which of the following diseases are caused by helical viruses?

  1. Rabies
  2. Ebola
  3. Polio 4. Herpes simplex

  1. 1 and 2

  2. 1 and 4

  3. 2 and 3

  4. 2 and 4

  5. 3 and 4

Show answer
Correct Option: A
Explanation:

The viruses that cause rabies and ebola hemorrhagic fever are helical viruses.

Which of the following is a pair of viral genera belonging to the same virus family?

  1. Pestivirus and Mastadenovirus

  2. Papillomavirus and Orthopoxvirus

  3. Varicella virus and Simplex virus

  4. Hepadnavirus and Enterovirus

  5. Rhinovirus and Alphavirus

Show answer
Correct Option: C
Explanation:

Varicella virus and Simplexvirus: Both belong to Herpesviridae family

Members of which of the following viral families contain single-stranded DNA?

  1. Parvoviridae

  2. Adenoviridae

  3. Poxviridae

  4. Picornaviridae

  5. Caliciviridae

Show answer
Correct Option: A
Explanation:

Members of Paroviridae family contain single-stranded DNA.

Which of the following is a pair of diseases caused by members of Herpesviridae family?

  1. Roseola and Chickenpox

  2. Smallpox and Cowpox

  3. Smallpox and Chickenpox

  4. Chickenpox and Cowpox

  5. Roseola and Cowpox

Show answer
Correct Option: A
Explanation:

Genus Varicellovirus, which causes chickenpox, and genus Roseolovirus, which causes roseola, belong to Herpesviridae family.

Which of the following is a set of latent viral infections in humans?

  1. HIV/AIDS, Leukemia, Shingles

  2. Cervical cancer, HIV/AIDS, Progressive encephalitis

  3. Progressive encephalitis, Leukemia, Shingles

  4. Cold sores, Leukemia, Shingles

  5. Cold sores, Cervical cancer, Shingles

Show answer
Correct Option: D
Explanation:

Cold sores, Leukemia, Shingles: All are latent viral infections.

Which of the following pairs is/are not correctly matched?

  1. Vesiculoviruses : Bullet-shaped viruses with a spiked envelope
  2. Filoviruses : Enveloped, helical viruses
  3. Orthopoxviruses : Small spherical viruses

  1. Only 1

  2. Only 2

  3. Only 3

  4. Both 1 and 2

  5. None of these

Show answer
Correct Option: C
Explanation:

Orthopoxviruses are very large, complex, brick-shaped viruses.

Match virus genera in column I with their respective viral family in column II.

 
Column I Column II
P. Adenoviridae 1. Orthopoxvirus
Q. Poxviridae 2. Mastadenovirus
R. Picornaviridae 3. Norovirus
S. Caliciviridae 4. Enterovirus

  1. P - 1; Q - 2; R - 3; S - 4

  2. P - 1; Q - 3; R - 2; S - 4

  3. P - 2; Q - 1; R - 4; S - 3

  4. P - 2; Q - 3; R - 4; S - 1

  5. P - 3; Q - 2; R - 1; S - 4

Show answer
Correct Option: C
Explanation:

Mastadenovirus belongs to Adenoviridae family. Orthopoxvirus belongs to Poxviridae family. Enterovirus belongs to Picornaviridae family. Norovirus belongs to Caliciviridae family.

Which of the following viruses is a member of Retroviridae family?

  1. Influenza virus A

  2. Lentivirus

  3. Rotavirus

  4. Reovirus

  5. Vesiculovirus

Show answer
Correct Option: B
Explanation:

Lentivirus is a member of Retroviridae family.

Which of the following is an example of negative sense single-stranded RNA virus?

  1. Hepatitis A virus

  2. Hepatitis B virus

  3. Hepatitis C virus

  4. Hepatitis D virus

  5. Hepatitis E virus

Show answer
Correct Option: D
Explanation:

Hepatitis D virus is an example of negative sense single-stranded RNA virus.

Which of the following viral genera belongs to Paramyxoviridae family?

  1. Filovirus

  2. Lyssavirus

  3. Hantavirus

  4. Morbillivirus

  5. Lentivirus

Show answer
Correct Option: D
Explanation:

Morbillivirus (measles virus) belongs to Paramyxoviridae family.

Match the viral families in group I with their characteristics in group II.

 
Group I Group II
P. Adenoviridae 1. Single-stranded RNA, + Strand, Enveloped
Q. Caliciviridae 2. Single-stranded RNA, + Strand, Non-enveloped
R. Picornaviridae 3. Double-stranded DNA, Enveloped
S. Poxviridae 4. Double-stranded DNA, Non-enveloped

  1. P - 1; Q - 2; R - 3; S - 4

  2. P - 1; Q - 3; R - 2; S - 4

  3. P - 2; Q - 1; R - 4; S - 3

  4. P - 4; Q - 1; R - 2; S - 3

  5. P - 3; Q - 2; R - 4; S - 1

Show answer
Correct Option: D
Explanation:

Adenoviridae is a family of non-enveloped double-stranded DNA viruses. Caliciviridae is a family of enveloped + strand single-stranded RNA viruses. Picornaviridae is a family of non-enveloped + strand single-stranded RNA viruses. Poxviridae is a family of enveloped double-stranded DNA viruses.

Match the plant disease-causing viruses in column I with their characteristics in column II.

 
Column I Column II
A. Cauliflower mosaic virus 1. Double-stranded DNA, non-enveloped
B. Potato yellow dwarf virus 2. Single-stranded RNA, − strand, enveloped
C. Wound tumor virus 3. Double-stranded RNA, non-enveloped

  1. A - 1; B - 2; C - 3

  2. A - 1; B - 3; C - 2

  3. A - 2; B - 1; C - 3

  4. A - 2; B - 3; C - 1

  5. A - 3; B - 2; C - 1

Show answer
Correct Option: A
Explanation:

Cauliflower mosaic virus is a non-enveloped double-stranded DNA virus belonging to Papovaviridae family. Potato yellow dwarf virus is an enveloped, single-stranded RNA virus belonging to Rhabdoviridae family. Wound tumour virus is a non-enveloped double-stranded RNA virus belonging to Reoviridae family.

Which of the following viral families does not contain DNA oncogenic viruses?

  1. Adenoviridae

  2. Papovaviridae

  3. Poxviridae

  4. Herpesviridae

  5. Retroviridae

Show answer
Correct Option: E
Explanation:

Among the RNA viruses, only the oncoviruses in the family Retroviridae cause cancer.

Which of the following options represents a viral disease and its causative agent?

  1. Cat-scratch disease - Bartonella henselae

  2. Ringworm - Trichophyton

  3. Toxoplasmosis - Toxoplasma gondii

  4. Trichinellosis - Trichinella spiralis

  5. West Nile encephalitis - Flavivirus

Show answer
Correct Option: E
Explanation:

West Nile encephalitis is a viral disease caused by Flavivirus.

Which of the following diseases is caused by prions?

  1. Severe acute respiratory syndrome

  2. West Nile encephalitis

  3. Mad cow disease

  4. Dengue hemorrhagic fever

  5. Ebola hemorrhagic fever

Show answer
Correct Option: C
Explanation:

Mad cow disease is an infectious disease caused by prions that affect the brains of cattle.

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