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specific virology Flashcards

1
Q

Duck hepatis is caused by a herpes virus

a. True
b. False

A

False
(picornavzrdae -> duck hepatitis A 1)
aborviridae -> duck hepatitis 2

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2
Q

Adenoviruses

a. Cause transplacental infection
b. Cause tumour formation due to the inhibition of apoptosis
c. Cause syncytium formation in tissue cultures
d. Use viral transcriptase enzyme for their replication

A

B Cause tumour formation due to the inhibition of apoptosis

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3
Q

. Please, mark which statement is true!

a. Bornaviruses cause encephalitis in horses
b. Mammalian bornaviruses are endemic worldwide
c. The resevoirs of bornaviruses are different parrot species
d. Bornaviruses are only pathogenic in mammals

A

Bornaviruses cause encephalitis in horses

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4
Q

Which statement is false?

a. Paramyxoviruses cause haemadorption
b. Paramyxoviruses cause intracytoplasmic inclusion bodies
c. Parmyxoviruses cause syncytium-formation
d. Paramyoviruses cause intracellular inclusion bodies

A

d. Paramyoviruses cause intracellular inclusion bodies

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5
Q

Which statement is true?

a. In lytic infection phage replication happens
b. The lysogen infection results in phage resistance in the bacteria
c. Phage induction means gene transfer between bacteria
d. The temperate phage is a thermosensitive mutant

A

b. The lysogen infection results in phage resistance in the bacteria

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6
Q

In an acidic environment, the hepatitis B virus can retain its infectivity for a long time.

a. true
b. false

A

b. false

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7
Q

herpesviruses can be detected by haemagluttination test.

a. False
b. True

A

a. False

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8
Q

Filoviruses

a. Are weak antigens
b. Are mainly present in Africa
c. Have rodent reservoir species
d. Have extremely good environmental resistance

A

b. Are mainly present in Africa

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9
Q

Influenzaviruses may cause disease with high mortality a. In poultry
b. In dogs c. In swin d. In horses

A

d. In horses

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10
Q

The feline infectious peritonitis is caused by a
calicivirus
a. False
b. True

A

A. False

Caused by coronavirus

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11
Q 
Hepadnaviruses
caused by coronavirus
a. Infect only birds
b. Are arboviruses
c. Use reverse transciptase for replication 
d. Cause haemorrhagic nephritis
A

c. Use reverse transciptase for replication

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12
Q

Retrovirus capsid symmetry

a. Is polyhedral
b. Is conical
c. Is rod shaped
d. Can be any of the above

A

d. Can be any of the above

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13
Q

Nipah virus causes encephalitis in

a. Swine and human
b. Dog and human
c. Horse and human
d. Monkey and human

A

a. Swine and human

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14
Q

Herpesvirus is the causative agent of

a. Smallpox
b. Pseudocowpox
c. Goatpox
d. Chickenpox

A

d. Chickenpox

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15
Q

Which statement is true?

a. Parapoxviruses are good antigens
b. Capripoxviruses cause notifiable disease
c. Leporipoxviruses cause the appearance of oral scabs
d. Avipoxviruses are zoonotic

A

b. Capripoxviruses cause notifiable disease

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16
Q

Retroviruses

a. Cause self-limiting, acute infections
b. Cause food borne infections
c. Cause immunosuppression
d. Cause disease only in mammal

A

c. Cause immunosuppression

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17
Q

Please,mark, which statement is false! Adenoviruses…
?
a. Cause usually pneumoenteritis in cattle and sheep
b. Cause encephalitis in chicken and feather development problems in parrots
c. Cause hepatitis and respiratory disease in dogs
d. Cause haemorrhagic enteritis in turkey and marble spleen disease in pheasants

A

a. Cause usually pneumoenteritis in cattle and sheep

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18
Q

Astroviruses

a. Cause gastroenteritis in mammals
b. Have low resistance in environment c. Are euryxen pathogens
d. Spread by the air

A

a. Cause gastroenteritis in mammals

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19
Q

Polyomaviruses are haemagglutinating viruses a. False

b. True

A

True

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20
Q

Picornaviruses

a. Can be detected by haemagglutination test
b. Have quasihelical symmetry
c. Express their viral proteins via subgenomial mRNA synthesis
d. Have strong environmental resistance

A

c. Express their viral proteins via subgenomial mRNA synthesis

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21
Q

The genome of orthomyoxoviruses is

a. +ssRNA
b. Segmented
c. Circular
d. Ambisense

A

Segmented

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22
Q

Adenoviruses

a. Are generally weak antigens
b. Cause persisting infection in the kidney of dogs c. Can be propagated only in embryonated eggs
d. Can be differentiated by VN test

A

d. Can be differentiated by VN test

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23
Q

Which statement is true?

a. Viroids are enveloped particles
b. Viroids can cause asymptomatic infections c. Viroids consist of only nucleic acid
d. Viroids contain structural proteins

A

b. Viroids can cause asymptomatic infections

c. Viroids consist of only nucleic acid

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24
Q
  1. The host range of Orthoreoviruses is euryxen
    a. True
    b. False
A

true

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25
Q

Which statement is true?

a. The western equine encephalitis virus is transmitted from human to human
b. The American equine encephalitis viruses are transmitted by ticks
c. The eastern equine encephalitis virus is maintained by birds

A

The eastern equine encephalitis virus is maintained by birds

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26
Q

Please, mark, which statement is true!

a. Nairoviruses are zoonotic
b. All hantaviruses are arboviruses
c. The genome of peribunyaviruses consists of two segments of positive-sense single-stranded RNA
d. The reservoirs of phenuiviruses are bats

A

Nairoviruses are zoonotic

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27
Q

. Arteriviruses

a. Cause abortion and respiratory signs in horses
b. Cause diarrhoea in chicken
c. Have quasihelical symmetry
d. Use reverse transcriptase during replication

A

a. Cause abortion and respiratory signs in horses

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28
Q

. Please, mark, which statement is true! 3 a. Bornaviruses have a narrow host range

b. Avian bornaviruses are highly resistant in the environment
c. The borna disease virus is spread by bats
d. Bornaviruses can infect only humans

A

b. Avian bornaviruses are highly resistant in the environment

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29
Q

The canine distemper is caused by a morbillivirus.

a. True
b. False

A

True

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30
Q

Scrapie

a. Is a disease of the tomato plant caused by a viroid b. Is a different term of mad cow syndrome
c. Causes itching in sheep
d. Is a spongiform encephalopathy of humans

A

c. Causes itching in sheep

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31
Q

Which statement is true?

a. Syntytium is a characteristic CPE of alphaherpesviruses
b. The replication time of betaherpesviruses is less than 9 hours
c. Herpesviruses induce cytoplasmic inclusion bodies
d. Gammaherpesviruses cause latency in salivary glands

A

Gammaherpesviruses cause latency in salivary glands

32
Q

Equine arteritis virus can cause persisting infection in

a. Mares
b. Stallions
c. Foals
d. Geldings

A

b. Stallions

33
Q

Retroviruses

a. Can be detected by HA assay
b. Cannot be propagated in vitro
c. Are non-enveloped viruses
d. Are good antigens

A

d. Are good antigens

34
Q

Viroids spread mechanically

a. True
b. False

A

True

35
Q

he PRRS virus causes

a. Oedema and abortion in horse
b. Respiratory symptoms and abortion in swine
c. Haemorrhagic fever in monkey
d. Elevation of the lactate-dehydrogenase level in mouse

A

b. Respiratory symptoms and abortion in swine

36
Q

Reoviruses

a. Do not cause cytopathtic effects
b. Are orphan viruses
c. Have segmented genome
d. Are always transmitted by mosquitos.

A

c. Have segmented genome

37
Q

Parvoviruses

a. Contain double-stranded RNA type nucleic acid
b. Use viral transcriptase enzyme for their multiplication
c. Cannot be propagated in tissue culture
d. May cause abortion

A

d. May cause abortion

38
Q

. Arenaviruses have an ambisnese, -ssRNA genome

a. True
b. False

A

True

39
Q

The venezualan equine encephalitis is a notifiable disease

a. True
b. False

A

True

40
Q

Which statement is true?

a. Eastern equine encephalitis is present in asia
b. Togaviruses can be demonstrated by the HA test c. Certain togaviruses cause respiratory disease
d. Togaviruses are weak antigens

A

b. Togaviruses can be demonstrated by the HA

41
Q

Astroviruses

a. Can be detected by haemagglutinatin test b. Cannot be propagated in vitro
c. Are good antigens
d. Cause disease in fish

A

c. Are good antigens

42
Q

. The antigenicity of influenza viruses is determined by the HA and NA genes

a. True
b. False

A

true

43
Q

What is true
A) The rabies virus is a weak antigen
b. The most common source of human rabies cases is from the bite from rabid cats
c. Certain animal species are orally vaccinated against
rabies
d. Rabies cause asymptomatic infection in many mammalian hosts

A

c. Certain animal species are orally vaccinated against

44
Q

The primary host of Spumaviruses are the pumas (=mountain lions,cougars)

a. True
b. False

A

False

45
Q

Which statement is true?

a. Caliciviruses are enveloped
b. Caliciviruses have stenoxen host range
c. Caliciviruses are transmitted by ticks
d. Caliciviruses use their genome as Mrna

A

b. Caliciviruses have stenoxen host range

46
Q

Which statement is true?

a. The peste des petitis ruminants’ virus causes fever and mucosal erosions
b. Rinderpest is present worldwide
c. Measles virus causes encephalitis in human d. Distemper virus infects pet cats too

A

The peste des petitis ruminants’ virus causes fever and mucosal erosions

47
Q

The spring viraemia of carp virus is a thermosensitive mutant

a. True
b. False

A

true

48
Q

Which statement is true?

a. Molluscipoxviruses infect molluscs
b. Yatapoxiviruses infect bats
c. Suipoxviruses are vectored by mosquitoes
d. Leporipoxviruses induce tumour formation

A

d. Leporipoxviruses induce tumour formation

49
Q

Please, mark, which statement is true.

a. Certain anelloviruses may cause apathogenic infection
b. Anelloviruses contain circular DNA c. Anelloviruses are euryxen pathogens d. Anelloviruses cause anaemia in swin

A

Certain anelloviruses may cause apathogenic infection

50
Q

Birnaviruses

a. Have single-stranded DNA genome
b. Are causing reproductive problems in cattle c. Are euryxen viruses
d. Have strong resistance in the environment

A

d. Have strong resistance in the environment

51
Q

Which statement is true?

a. Flaviviruses have an icosahedral capsid
b. Flaviviruses are resistant to detergents
c. Flaviviruses cause intranuclear inclusion body formation in cell culture
d. Flaviviruses have a segmented genome

A

a. Flaviviruses have an icosahedral capsid

52
Q

Which statement is false? Herpesviruses…

a. Are related antigenically within genera b. Are sensitive to detergents
c. Are never tumour formatting
d. Are enveloped viruses

A

c. Are never tumour formatting

53
Q

Which statement is false?

a. The virions of poxviruses are larger than most of the other viruses of domestic animals
b. The virions of poxvirions have complex symmetry
c. The genome of poxviruses consists of 3 segments
d. Poxviruses replicate in the cytoplasm

A

The genome of poxviruses consists of 3 segments

54
Q

The virions of filoviruses

a. Take ribosomes from the host cells
b. Are pleomorphic
c. Are bullet shaped
d. Have helical symmetry

A

d. Have helical symmetry

55
Q

Which statement is false?

a. The core and matrix proteins of orthomyxoviruses are conservative genes.
b. In birds all influenza A serotypes can be detected
c. The envelope proteins of orthomyxoviruses are hypervariable genes
d. Influenza type C is transmitted by mosquitoes

A

d. Influenza type C is transmitted by mosquitoes

56
Q

Which statement is false?

a. Zoonotic spread is common among papillomaviruses of mammals
b. Zoonotic spread is common among astroviruses of mammals
c. Zoonotic spread is common among arteriviruses of mammals
d. Zoonotic spread is common among hepeviruses of mammals

A

d. Zoonotic spread is common among hepeviruses of mammals

57
Q

Which statement is true?

a. Reoviruses are enveloped
b. Among reoviridae family only rotaviruses can be propagated in vitro
c. Reoviruses usually cause diarrhoea
d. Reoviruses have double capsid

A

d. Reoviruses have double capsid

58
Q

Which statement is false?
a. VES is an exclusively swine disease
? b. Feline calicivirus may cause locomotor disorders
c. Noro- and sapoviruses are communicated by food
d. Lagoviruses infect only domestic rabbits

A

b. Feline calicivirus may cause locomotor disorders

59
Q
  1. Which statement is false?
    a. The canine herpesvirus causes generalized infection in pregnant dogs
    b. Herpesvirus can infect fish
    c. Bovine herpesviruses cause respiratory and genital infections
    d. The feline herpesviruses cause respiratory disease
A

c. Bovine herpesviruses cause respiratory and genital infections

60
Q

Which statement is true?

a. The mouse sarcoma virus is competent in multiplication and has a viral onc gene.
b. The feline sarcoma virus is competent in multiplication and has a viral onc gene
c. The Rous-sarcoma virus is competent in multiplication and has a viral onc gene
d. The avian sarcoma virus is competent in multiplication and has a viral onc gene

A

The Rous-sarcoma virus is competent in multiplication and has a viral onc gene

61
Q

Coronaviruses

a. Propagate only in dividing cells
b. Do not show serological cross reactions
c. Synthesize subgenomic mRNAs for structural proteins
d. Cause disease exclusively in birds

A

c. Synthesize subgenomic mRNAs for structural proteins

62
Q

. The alpha, beta and gamma herpesvirinae subfamily is differentiated

a. By the replication time
b. By the latency site
c. By the cytopathetic effects
d. Considering all the details above

A

d. Considering all the details above

63
Q

Which statement is true?
a. The distemper virus can infect large feline species
b. The distemper virus persist in the urine bladder and the brain
C Both A and B are true
d. Both A and B are false

A

C Both A and B are true

64
Q

Which statement is false?

a. Enteroviruses cause disease exclusively in human.
b. Teschoviruses infect swine
c. Aphtoviruses have euryxen host range
d. Rhinoviruses are thermosensitive mutants

A

a. Enteroviruses cause disease exclusively in human.

65
Q
  1. Lumpy skin disease is mainly seen in cattle and wild ruminants
    a. False
    b true
A

b true

66
Q

Birnaviruses
A. Are enveloped
b. Contain diploid RNA type nucleic acid
c. Cause immunosuppression in chicken
d. Have low resistance in the environment

A

c. Cause immunosuppression in chicken

67
Q

Influenza D viruses typically cause disease in a. Humans and seasl

b. Ducks and geese
c. Pigs and cows
d. Humans and pigs

A

c. Pigs and cows

68
Q

Prions can be detected by

a. CF test
b. PCR
c. HA assay
d. ELISA

A

d. ELISA

69
Q

Polyomaviruses

a. Persist in the lymphoid tissuecb. Integrate into the cellular genome
c. Cause per os infection
d. Cannot be propagated in cell cuture

A

b. Integrate into the cellular genome

70
Q

Circoviruses cause abortion in swine

a. True
b. False

A

b. False

71
Q

Please, mark, which statement is true!

a. Novirhaboviruses infect mammals
b. The bovine ephemeral fever virus is an arbovirus
c. The rabies virus is stenoxen
d. The rabies virus causes cell-bound viraemia

A

b. The bovine ephemeral fever virus is an arbovirus

72
Q

ll of the viruses classified in the Bunyavirales
order…
a. Are very sensitive to environmental conditions b. Are arboviruses
? c c. Are zoonotic
, d. All 3 answers above are false

A

c. Are zoonotic

73
Q

icoronaviruses use their genome as Mrna

a. True
b. False

A

true

74
Q

The African swine fever virus

a. Has low resistance in the environment
b. Causes haemadsorption
c. Causes a disease that is preventable with a vaccine
d. Is shed by the faeces

A

b. Causes haemadsorption

75
Q

The bluetongue virus may cause abortion in sheep.

a. True
b. False

A

true

specific virology (2 decks)

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