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Acellular Life Viruses

Total questions: 102

Worksheet time: 51mins

Name
Class
Date
1.

Term virus has been derived from latin which means

a)

Poison

b)

Venom

c)

Viscous fluid

d)

All

2.

Virus is a ___ entity among living and non living

a)

Balanced

b)

Transitional

c)

Threshold

d)

None

3.

Characters of Viruses are

a)

They remain inactive outside the host

b)

They become active inside the host

c)

They multiply within the host

d)

All

4.

Viruses are sub microscopic entities capable of being introduced into specific living cells and reproducing inside such cells only. This statement was proposed by in 1953

a)

Stanley

b)

Twort

c)

Luria

d)

Beijerinck

5.

Virion is a

a)

Single virus

b)

Group of virus

c)

Un developed virus

d)

Naked virus

6.

Most plants viruses are

a)

RNA

b)

DNA

c)

RNA and DNA

d)

None

7.

Carolous causius (1576) recorded first viral disease in

a)

Tulip

b)

Rose

c)

Daffodil

d)

Tobacco

8.

Who found tobacco mosaic disease in 1886

a)

D. Ivanovski

b)

Meyer

c)

Beijinck

d)

Stanley

9.

Ivanovski was

a)

Russian biologist

b)

Russian botanist

c)

Russian zoologist

d)

Russian physician

10.

Who discovered viruses in 1892

a)

Ivanovski

b)

C. Causius

c)

Twort

d)

Stanley

11.

Cotagium virum fluidum said by (1898)

a)

Ivanovski

b)

Meyer

c)

Beijinck

d)

C. Causius

12.

D. Herelle discovered bacteriophage in

a)

1915

b)

1916

c)

1917

d)

1919

13.

Viruses were first time crystallized in

a)

1931

b)

1935

c)

1938

d)

1939

14.

Viruses are ____ entity between living and non living

a)

Balanced

b)

Silent

c)

Intermediate

d)

None

15.

Which of the following is non living nature of viruses

a)

Absence of growth and division , do not have independent existence , good chemical substance outside the host , having high specific gravity

b)

Lack of respiration and cellular metabolism , absence of cell wall and cell membrane

c)

They show property of mutation , show response to environmental conditions

d)

Both A and B

16.

Cauliflower mosaic virus is

a)

RNA virus

b)

DNA virus

c)

dsRNA

d)

dsDNA

17.

Influenza virus contains proteins

a)

70%

b)

90%

c)

60%

d)

80%

18.

Bacteriophage viruses are

a)

DNA

b)

RNA

c)

dsRNA

d)

ssRNA

19.

Cancer causing viruses are

a)

Reto viruses

b)

Rabdo viruses

c)

Reo viruses

d)

Retro viruses

20.

Reo viruses are

a)

RNA

b)

DNA

c)

RNA or DNA

d)

RNA and DNA

21.

Vaccinia viruses have enzyme

a)

Reverse transcriptase

b)

Lyzozyme

c)

DNA or RNA polymerase

d)

Transcriptase

22.

Cell affected by HIV is

a)

T Helper lymphocytes

b)

Macrophages

c)

Dendritic cells

d)

All

23.

The smallest subunits of envelope are called

a)

Capsomers

b)

Papsomeres

c)

Caplomers

d)

Peplomers

24.

Pathogenicity of viruses is due to

a)

Capsid

b)

Envelope

c)

Nucleic acid

d)

Glycoproteins

25.

The genetic material of viruses are of types

a)

One

b)

2

c)

3

d)

4

26.

Cyanophages like ____ control water blooms

a)

LPP 1

b)

SM-1

c)

Both

d)

DFF-2

27.

Which virus was used to determine DNA as chemical basis heredity

a)

HIV

b)

Retrovirus

c)

Polio virus

d)

Phage

28.

Mosaic virus was discovered by

a)

Franklin

b)

Charles Chamberland

c)

Stanley

d)

Ivanovski

29.

The first virus discovered was

a)

dsRNA

b)

ssRNA

c)

dsDNA

d)

ssDNA

30.

First virus discovered in

a)

1884

b)

1796

c)

1892

d)

1898

31.

Franklin described the structure of TMV in

a)

1857

b)

1957

c)

1901

d)

1892

32.

Number of capsomeres in TMV is

a)

1230

b)

3120

c)

2130

d)

2310

33.

Phage look like

a)

Tadpole

b)

Sperm

c)

Both

d)

Rod shaped

34.

The head of bacteriophage is

a)

Octagonal

b)

Octahedron

c)

Hexagonal

d)

Hexahedronal

35.

There are ___ caudal fibres in T4

a)

4

b)

6

c)

8

d)

5

36.

The viruses of fungi are

a)

dsDNA

b)

ssDNA

c)

ssRNA

d)

dsRNA

37.

Viruses that attack on algae

a)

Mycophages

b)

Bacteriophage

c)

Cyanophages

d)

Phycophages

38.

Sofferman and Morries discovered cyanophages in

a)

1961

b)

1962

c)

1963

d)

1964

39.

Viroids were discovered by in 1967

a)

Prusinar

b)

Diener

c)

Raymer

d)

Both B and C

40.

The term viroid was coined by in 1971

a)

Diener

b)

Raymer

c)

Soffman

d)

Franklin

41.

Viroid is

a)

ssRNA

b)

dsRNA

c)

dsDNA

d)

ssDNA

42.

Which disease is not caused by viroid

a)

Cadang Cadang of coconut

b)

Cucumber pale fruit

c)

Chrysanthemum stunt , Avocado sunblotch

d)

Kuru

43.

Prions were discovered in

a)

1983

b)

1984

c)

1985

d)

1986

44.

Who discovered prions

a)

Stanley

b)

Prusiner

c)

Diener and Raymer

d)

D. Herelle

45.

Slow viruses are

a)

Virion

b)

Viroids

c)

Prions

d)

None

46.

Who gave the term interferons in 1957

a)

Alliac isaaccs

b)

Linderman

c)

Both A and B

d)

G.M Findley and Mccallum

47.

Viral interference phenomenon was reported in

a)

1935

b)

1936

c)

1937

d)

1938

48.

Interferons are

a)

Proteins

b)

Polypeptide of low molecular weight

c)

Both

d)

Glycoproteins

49.

Viral interference was reported by

a)

G.M. Findley and Mccallum

b)

Soffman and Morris

c)

Diener and Raymer

d)

Alliac isaacs and Linderman

50.

Father of virology is

a)

Ivanovski

b)

Edward jenner

c)

Stanley

d)

Martinus Beijerinck

51.

Linderman(1957) did first successful vaccination against

a)

HBV

b)

Polio

c)

Measles

d)

Small pox

52.

First virus to be cultured in human cells was

a)

Small pox

b)

Polio

c)

Rhino

d)

Paramyxovirus

53.

First to isolate plant virus was

a)

Ivanovski

b)

Stanley

c)

Smith

d)

Stackman

54.

Viruses enter the plant cells only through

a)

Lenticels

b)

Wounds

c)

Stomata

d)

Roots

55.

Influenza virus has got

a)

Naked capsid

b)

Enveloped capsid

c)

Naked polyhedral capsid

d)

No capsid at all

56.

Each capsomere of TMV contain amino acids whose number is

a)

158

b)

185

c)

815

d)

581

57.

Ribovira is a group of viruses which contains

a)

dsDNA

b)

ssDNA

c)

RNA

d)

None

58.

Helper virus is called

a)

Perfect phage of virus

b)

A defective phage which helps another phage

c)

A latent phage

d)

None

59.

Arthropods borne viruses are

a)

Ribo virus

b)

Reo virus

c)

Arbo virus

d)

None

60.

Wound tumor virus has

a)

dsRNA

b)

ssRNA

c)

dsDNA

d)

ssDNA

61.

Which one is absent in viruses

a)

Replication

b)

Protein synthesis

c)

Energy liberation

d)

Mutation

62.

Which one is smallest virus

a)

Foot and mouth virus

b)

Tobacco mosaic virus

c)

Coliphage virus

d)

Wound tumor virus

63.

The agents which are known to cause CJD are

a)

Protein particles

b)

A class of bacteria

c)

A class of virus

d)

Fungi

64.

Who proposed the phanerogram of viruses

a)

Lwoff and Tournier

b)

W.M Stanley

c)

Weil Etal

d)

None

65.

A cryptogram has got how many pairs of information

a)

1

b)

2

c)

3

d)

4

66.

In which disease the DNA is double stranded

a)

HAV

b)

HBV

c)

HCV

d)

HDV

67.

A substance low molecular weight protein produced by host cells in response to viral infection and protect other cells against further viral infection is

a)

Phytotoxin

b)

Antibody

c)

Interferon

d)

Hormone

68.

Single-stranded nucleic acid is found in

a)

E. coli

b)

Psi × 174

c)

Lambda

d)

T4

69.

Temin worked on which virus

a)

Herpes virus

b)

Rhino virus

c)

Retro virus

d)

Dengue virus

70.

Genetic material of Reovirus is

a)

dsRNA

b)

ssRNA

c)

dsDNA

d)

ssDNA

71.

Virus multiply

a)

In vivo

b)

In vitro

c)

Both

d)

None

72.

Virus was assigned its name by

a)

Ivanovski

b)

Adolf Mayer

c)

Beijinck

d)

Mckinney

73.

Viruses are known as

a)

Unicellular

b)

Acellular

c)

Multicellular

d)

Free genes

74.

Vertical transmission of virus in human is through

a)

Placenta of mother

b)

Sperm of father

c)

Both

d)

None

75.

Viruses multiply in

a)

Bacteria only

b)

All living cells

c)

Specific living cells

d)

Rotten food

76.

Viruses usually infect all parts of plant except

a)

Stem apex

b)

Cortex

c)

Pith

d)

Phloem

77.

Which one contain both DNA and RNA

a)

Cyanophages

b)

Leuko virus

c)

Herpes virus

d)

Polio virus

78.

Viruses that infect bacteria multiply and cause lysis are called

a)

Lytic

b)

Lysogenic

c)

Lysozymes

d)

Lipolytic

79.

Phages that cause lysogenic cycle are

a)

Temperate phages

b)

Virulent phages

c)

Avirulent phages

d)

Lytic phages

80.

Tailed bacteriophage are

a)

Motile on the surface of bacteria

b)

Non motile

c)

Actively motile in water

d)

Motile on surface of plant leaves

81.

On the basis of host attached viruses are classified into

a)

2

b)

3

c)

4

d)

5

82.

Dog distemper is a disease carried by

a)

Prion

b)

Viroid

c)

Virus

d)

Bacteria

83.

A provirus is

a)

Precursor of viral particles

b)

Prolonged viral infection

c)

A symbiotic viral Nucleic acid found in host genome

d)

A dormant viral protein

84.

Zymophage remains parasite on

a)

Bacteria

b)

Yeast

c)

Algae

d)

Cyanobacteria

85.

Genetic mapping of bacteriophage psi × 174 has been done by

a)

Pirie and Bowden

b)

F. Sanger

c)

R.L sinsheimer

d)

Stalk and sabin

86.

The virus responsible for lysogenic life cycle is

a)

Cyanophage

b)

Virulent phage

c)

T2 phage

d)

Lambda phage

87.

Which of the following shows coiled strand of RNA and capsomeres

a)

Measles virus

b)

Retrovirus

c)

Polio virus

d)

TMV

88.

Which of the following sequence is found in Rous Sarcoma

a)

DNA>RNA>Protein

b)

RNA>RNA>Protein

c)

RNA>DNA>RNA>Protein

d)

DNA>DNA>Protein

89.

The enzyme formed by bacteriophage which rupture the bacterial cell wall is

a)

Proenzyme

b)

Phage lyzozyme

c)

Endolysins

d)

Phago Protein

90.

Which of the phage is avirulent

a)

M12

b)

T4

c)

Lambda

d)

None

91.

The virus of deoxyvira contains

a)

mRNA

b)

tRNA

c)

DNA

d)

rRNA

92.

An extreme example of latency in which DNA of the phage is integrated with the DNA of host cell chromosome is

a)

Lysis

b)

Lysogeny

c)

Provirus

d)

Attenuated virus

93.

In cyanophages the genetic material is

a)

RNA

b)

DNA

c)

RNA and DNA

d)

Protein

94.

Satellite virus is

a)

Independent virus

b)

Associated with an activator virus

c)

Both

d)

None

95.

Ultrastructure of bacteriophage T was studied by

a)

Sinsheimer

b)

S. Brenner

c)

Schlesinger

d)

None

96.

Which statement is wrong for viruses?

a)

All are parasites

b)

All have helical symmetry

c)

They have the ability to synthesis Nucleic acid and protein

d)

Antibodies have no effect on them

97.

The genome of transducing agents is

a)

single stranded RNA

b)

double stranded RNA

c)

Double stranded DNA

d)

Single stranded DNA

98.

A single stranded DNA molecule is a structure of

a)

T 2

b)

T4

c)

Lambda

d)

Psi * 174

99.

Which of the following statement is not true for retrovirus

a)

The genetic material in mature retrovirus is r n a

b)

Retrovirus are causative agents or certain kinds of cancer in men

c)

DNA is not present at any stage in the life cycle of retrovirus

d)

Retrovirus have genes for RNA dependent DNA polymerase

100.

Satellite RNA are present in some

a)

Viroids

b)

Prions

c)

Pages

d)

Plant virus

101.

The genome of Influenza is

a)

Single stranded RNA -

b)

Single stranded RNA +

c)

Double stranded DNA

d)

Single stranded DNA

102.

Virus is a ___ entity among living and non living

a)

Balanced

b)

Transitional

c)

Threshold

d)

None

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