Virus
1.Influenza virus is:
a.2 RNA
b.2 DNA
c.1 RNA
d.1 DNA
Ans------>c
2.Plant virus generally contains
a.RNA
b.DNA
c.DNA and RNA
d.Only protein
Ans------>a
3.The protein coat of virus is called
a.Capsid
b.Capsule
c.Capsomere
d.Fiber
Ans------>a
4.Viruses which multiply without killing host
a.Virion
b.Lytic
c.Retrovirus
d.Temperate
Ans------>d
5.Head of of plant virus possesses
a.DNA
b.RNA
c.Protein
d.Lipid
Ans------>b
6.The disease influenza is:
a.Bacterial
b.Fungal
c.Algae
d.Viral
Ans------>d
7.Virus is composed of
a.Protein and nucleic acid
b.Protein and starch
c.Protein , RNA and DNA
d.Protein, starch and carbohydrate
Ans------>a
8.Virus lack
a.Protoplasm
b.Cell wall
c.Growth
d.All
Ans------>d
9.Viroids contain
a.Protein only
b.DNA only
c.RNA and protein
d.RNA only
Ans------>c
10.Antiviral agents(interferons) are
a.Lipids
b.Proteins
c.Alkaloids
d.Nucleic acid
Ans------>b
11.Capsid refers to
a.Nucleic acid of virus
b.Protein coat of virus particles
c.Carbohydrate part of virus
d.None of these
Ans------>b
12.Virus can multiply in
a.Bacteria only
b.All living cells
c.Specific living cells
d.Rotten foods
Ans------>c
13.Smallest free living organisms is
a.Virus
b.Viroid
c.Mycoplasma
d.Prions
Ans------>c
14.A natural stage of virus capable of infection is
a.Viriod
b.Virusoid
c.Virion
d.Virus particle
Ans------>c
15.The bacterial genome contains
a.DNA and histones
b.DNA or histones
c.DNA without histones
d.Neither DNA nor Histones
Ans------>c
16.Which virus is bullet shape?
a.Rabies virus
b.Varicella
c.Variola
d.Pollio virus
Ans------>a
17.Viruses are supposed to be
a.Prokaryotes
b.Eukaryotes
c.Non living entities
d.Living chemicals
Ans------>d
18.Which process cannot occur in the absence of virus?
a.Conjugation
b.Tr
Ansformation
c.Tr
Anslocation
d.Tr
Ansduction
Ans------>d
19.Cauliflower mosaic virus contains
a.Ss-RNA
b.Ds- RNA
c.Ds-DNA
d.Ss-DNA
Ans------>c
20.DNA is double standard in
a.Hepatitis A
b.Hepatitis B
c.Hepatitis C
d.Hepatitis D
Ans------>b
21.The inact virus unit or infectious particle is called
a.Capsomers
b.virion
c.bacteriophage
d.muton
Ans------>b
22.Bacteriophages release lysozyme during
a.Penetration phase
b.Eclipse phase
c.Adsorption phase
d.Maturation phase
Ans------>a
23.Coliphage Φ x 174 contains
a.Ss- DNA
b.Ss- RNA
c.Ds- RNA
d.Ds- DNA
Ans------>a
24.Mycophases have
a.Ss- RNA
b.Ds-RNA
c.Ss-DNA
d.Ds-DNA
Ans------>b
25.Which are viral diseases ?
a.Influenza, mumps and measles
b.Smallpox and chickenpox
c.Polio and hydrophobia
d.All of the above
Ans------>a