Viruses and Viroids: MCQs Quiz – 1 3

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Viruses and Viroids: MCQs (Multiple Choice Questions) on Viruses and Viroids. Quiz Test No. 1

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Viruses and Viroids: MCQs Quiz - 1

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Question 1
The genetic material in virus is
A
DNA and RNA
B
RNA only
C
DNA only
D
DNA or RNA
Question 2
Protein coat of a virus enclosing nucleic acid is called
A
Vector
B
Capsid
C
Plasmid
D
Genome
Question 3
The Phages that show lysogenic cycle are called
A
Lytic phages
B
Virulent phages
C
Temperate phages
D
None of these
Question 4
Which one of the following enzymes is present in the bacteriophage?
A
Succinic dehydrogenase
B
Lysozyme
C
Protease
D
Urease
Question 5
Which one of the following viruses contains both DNA and RNA?
A
Cyanophage
B
Herpes Virus
C
Leuko Virus
D
Polio Virus
Question 6
Bacteriophages kill
A
Fungi
B
Parasites
C
Bacteria
D
Viruses
Question 7
Virus multiplies in
A
living tissue
B
dead tissue
C
soil
D
culture medium
Question 8
Provirus is _____.
A
free virus
B
free DNA
C
primitive virus
D
integrated viral genome
Question 9
The tobacco mosaic virus (TMV) is approximately ___ in size.
A
300 × 18 nm
B
3000 × 5 nm
C
800 × 10 nm
D
700 × 30 nm
Question 10
A T-series bacteriophage can be recognized by its
A
irregular shape
B
rounded shape
C
tadpole shape
D
rhomboidal shape
Question 11
In AIDS, HIV kills
A
Bone-Marrow cells
B
T-Helper cell
C
Antibody molecule
D
T-Cytotoxic cell
Question 12
The non-living characteristic of viruses is
A
ability to undergo mutation
B
ability to cause diseases in the host
C
ability to multiply only inside the host
D
ability to be crystallized
Question 13
Which one of the following statements about viruses is correct?
A
Viruses are obligate parasites
B
All viruses contain both RNA and DNA
C
Viruses possess their own metabolic system
D
Nucleic acid of viruses is known as Capsid
Question 14
Viroids have
A
DS-DNA enclosed by protein coat
B
SS-DNA not enclosed by protein coat
C
SS-RNA not enclosed by protein coat
D
DS-RNA enclosed by protein coat
Question 15
Which of the following statements is false?
A
The bacteriophage has a double-stranded DNA molecule
B
Most plant viruses are RNA viruses
C
TMV has a double-stranded RNA molecule
D
Most animal viruses are DNA viruses
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3 thoughts on “Viruses and Viroids: MCQs Quiz – 1”

  • Reply ↓
    sarbajit mahapatra

    plz,give more question for practice…………

  • Reply ↓
    kiran

    plz show biology all chapters mcqs for first year and inter