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NUMS Acellular life ( viruses )

Total questions: 50

Worksheet time: 26mins

Name
Class
Date
1.

Shape of TMV

a)

Oval

b)

Hexagonal

c)

Icosahedral

d)

Spherical

2.

Size of virus ranges

a)

20-250 nm

b)

25-250 nm

c)

25-300 nm

d)

20-300 nm

3.

Which one of the following cells are mainly infected by HIV

a)

T-killer lymphocytes

b)

B-plasma cells

c)

T-helper lymphocytes

d)

B-memory cells

4.

Which one of the particle don't have nucleic acid as it's hereditary material?

a)

Virions

b)

Prions

c)

Viroid

d)

Snail

5.

Protein coat the capsid of adenovirus is

a)

Surrounded by Genome

b)

Surrounding the Envelope

c)

Surrounding genome

d)

Surrounded by tail

6.

Viroid differ from viruses in having

a)

Dna molecules with protein coat

b)

Rna molecules with protein coat

c)

Dna molecules without protein coat

d)

Rna molecules without protein coat

7.

The tobacco mosaic virus was crystallized for the first time by

a)

Jenner

b)

D'herelle

c)

Stanley

d)

Charles chamberland

8.

How many molecules of reverse transcriptase are found in HIV

a)

2

b)

4

c)

3

d)

6

9.

What gives definite shape to virions?

a)

Tail

b)

Capsid

c)

Base plate

d)

Genome

10.

Human immune deficiency virus is

a)

dsRNA enveloped virus

b)

dsRNA non-enveloped virus

c)

ssRNA enveloped virus

d)

ssRNA non-enveloped virus

11.

Cells in _nervous system can also be infected by HIV.

a)

Peripheral

b)

Autonomic

c)

Central

d)

All of these

12.

How many capsomeres are present in the capsid of adenoviruses?

a)

152

b)

252

c)

272

d)

262

13.

Reverse transcriptase can convert

a)

Single stranded Rna genome into single stranded dna

b)

Single stranded rna genome into double stranded dna

c)

Double stranded dna genome into double stranded rna

d)

Double stranded dna genome into single stranded rna

14.

What is present in a bacteriophage but not in an influenza virus?

a)

Dna

b)

Rna

c)

Glycoprotein

d)

Viral capsid

15.

First vaccine was developed by Edward Jenner against

a)

Cow pox

b)

Small pox

c)

TB

d)

Cholera

16.

Capsid of HIV is

a)

Spherical

b)

Conical

c)

Polyhedral

d)

Tubular

17.

Which of the following is not true for retroviruses

a)

The genetic material in mature retrovirus is RNA

b)

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

c)

Retrovirus are single stranded Rna tumor viruses

d)

Retroviruses carry gene for RNA dependent DNA polymerase

18.

Virus multiply

a)

In vivo

b)

In vitro

c)

Both vivo and vitro

d)

None of these

19.

Reverse transcription is used to make copies of

a)

Host rna

b)

Viral rna

c)

Host dna

d)

Viral dna

20.

Capsomeres present in viral capsid are

a)

Carbohydrates

b)

Proteins fragments

c)

Fatty acids

d)

Peptidoglycans

21.

The spread of Aids desease is promoted by

a)

Homosexuality

b)

Use of infected needles

c)

Immoral way of life

d)

All of these

22.

Which is not true for viruses

a)

Single stranded dna

b)

Double stranded dna

c)

Both dna or rna

d)

Double stranded rna

23.

Which of the following is a noncellular infectious entity

a)

Mycoplasma

b)

E. Choli

c)

Herpes virus

d)

Diplococcus

24.

Viruses that infect bacteria are called

a)

Prophage

b)

Bacteriophage

c)

Provirus

d)

Virions

25.

Study of nucleocapsids is carried out in

a)

Microbiology

b)

Virology

c)

Mycology

d)

Cell biology

26.

It is the essential component of all the viruses

a)

Nucleocapsid

b)

Head

c)

Tail

d)

Envelope

27.

HIV enters the host by binding to the _ protein on the surface of T4 cell.

a)

CD1

b)

CD2

c)

CD3

d)

CD4

28.

How many additional capsomeres are found in adenovirus, as compared to those in herpes virus

a)

70

b)

80

c)

100

d)

90

29.

The word virus is derived from Latin word

a)

Viroid

b)

Virion

c)

Vacca

d)

Venom

30.

Viruses reproduce by

a)

Binary fission

b)

Conjugation

c)

Replication

d)

Transduction

31.

Some retroviruses can convert

a)

Cancer cells into normal cells

b)

Cancer cells into degenerated cells

c)

Cancer cell into germ line cells

d)

Normal cells into cancer cells

32.

A virus can be considered a living organism because it

a)

Responds to touch stimulus

b)

Reproduces(insides the host)

c)

Respires

d)

Can cause disease

33.

_are responsible for mad cow infection and mysterious brain infection in man

a)

Prions

b)

Virions

c)

Viroid

d)

None of these

34.

Influenza virus is

a)

Rna

b)

Dna

c)

Both rna and dna

d)

None of these

35.

A structural component essential for all viruses is

a)

Envelope

b)

Capsid

c)

Spikes

d)

Dna

36.

Reverse transcriptase is present in

a)

Pox virus

b)

Paramyxovirus

c)

HIV

d)

TMV

37.

The part of virus which gives to it the hereditary feature is

a)

Capsid

b)

Nucleic acid

c)

Capsomeres

d)

Tail

38.

Pick up the one which is absent in viruses:

a)

DNA

b)

RNA

c)

Enzymes

d)

Metabolic machinery

39.

In Charles chamberland's experiment which one of the following represented filterable viruses:

a)

Bacteria

b)

TMV

c)

HIV

d)

Rabies virus

40.

Tumor causing virus is

a)

DNA enveloped

b)

RNA enveloped

c)

DNA non-enveloped

d)

RNA non-enveloped

41.

The virus can reproduce also in the:

a)

By mitosis

b)

By meiosis

c)

bacterial cell

d)

By raplication

42.

Genetically engineered vaccine is not available for

a)

HAV

b)

HCV

c)

HBV

d)

HEV

43.

Which of the following part in T4 phage contains contractile proteins?

a)

Capsid

b)

Tail core

c)

Tail fibers

d)

Tail sheath

44.

The common host for T-phage

a)

Mycoplasma

b)

Pseudomonas

c)

E. Choli

d)

Vibrio cholera

45.

First virus that purified and crystallized was

a)

Pox virus

b)

Rabies virus

c)

Tobacco mosaic virus

d)

Bacteriophage

46.

In infectious cycle of HIV, provirus is

a)

Viral RNA

b)

Host DNA

c)

Viral DNA

d)

Host RNA

47.

In infectious cycle of HIV,Original viral RNA is

a)

Degraded

b)

Incorporated

c)

Raplicated

d)

Conserved

48.

_are responsible for mad cow disease

a)

Phages

b)

Prions

c)

Viroids

d)

Viruses

49.

It gives definite shape to virion

a)

Dna

b)

Capsid

c)

Rna

d)

Envelope

50.

Virus coat is known as

a)

Capsid

b)

Virion

c)

Nucleoprotein

d)

Core

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