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Question 1

Corona- and arteriviruses

a. are transmitted by insect vectors.
b. may infect fish.
c. cause intranuclear inclusion bodies.
d. cause notifiable diseases.

Answer 1

d. cause notifiable diseases.

Question 2

Filoviruses have helical capsid.

a. false
b. true

Answer 2

true

Question 3

Retroviruses

a. cause cell-associated infections.
b. are extremely resistant in the environment.
c. infect only mammals.
d. are mostly zoonotic.

Answer 3

a. cause cell-associated infections.

Question 4

The yellow fever virus is classified into the Togaviridae family.

a. true
b. false

Answer 4

false

Question 5

The bornavirus genome is ambisense.

a. false
b. true

Answer 5

false

Question 6

Picorna- and caliciviruses

a. have a dsRNA genome.
b. are usually euryxen.
c. are usually less resistant in the environment.
d. are good antigens.

Answer 6

d. are good antigens.

Question 7

Hepadnaviruses have weak resistance in the environment.

a. true
b. false

Answer 7

true

Question 8

Which statement is true?

a. Viroids consist only of proteins.
b. Mad cow syndrome is a notifiable disease.
c. All bacteriophages have binal symmetry.
d. Prions cause rash and fever.

Answer 8

b. Mad cow syndrome is a notifiable disease.

Question 9

The genome of astroviruses is ambisense.

a. true
b. false

Answer 9

false

Question 10

The Epstein-Barr virus is a retrovirus.

a. false
b. true

Answer 10

false

Question 11

The rabies virus

a. is a weak antigen.
b. is an arbovirus.
c. cause strong CPE in cell culture.
d. does not cause viraemia.

Answer 11

d. does not cause viraemia.

Question 12

Avulaviruses cause disease in birds.

a. false
b. true

Answer 12

true

Question 13

The canine adenovirus type 1 causes encephalitis in fox.

a. true
b. false

Answer 13

true

Question 14

Paramyxoviruses

a. cause slowly progressing infections.
b. can use their genome as mRNA.
c. are enveloped.
d. cannot be propagated in vitro.

Answer 14

c. are enveloped.

Question 15

The parrot proventricular dilatation disease virus

a. belongs to the Arenaviridae family.
b. belongs to the Bunyavirales order.
c. belongs to the Bornaviridae family.
d. has a segmented genome.

Answer 15

c. belongs to the Bornaviridae family.

Question 16

The classical swine fever virus is transmitted by ticks.

a. false
b. true

Answer 16

false

Question 17

Influenza B and C viruses cause disease mainly in human.

a. false
b. true

Answer 17

true

Question 18

Prions are resistant to heat treatment.

a. true
b. false

Answer 18

true

Question 19

Some birnaviruses can cause disease in fish.

a. false
b. true

Answer 19

true

Question 20

Toga- and flaviviruses

a. have -ssRNA genome.
b. have helical capsid.
c. are enveloped.
d. cannot be propagated in cell culture.

Answer 20

c. are enveloped.

Question 21

Parvo- and circoviruses

a. have +ssRNA genome.
b. use viral transcriptase for their multiplication.
c. cause infection through skin lesions.
d. have good resistance to the environment.

Answer 21

d. have good resistance to the environment.

Question 22

Autovaccines are used against papillomaviruses.

a. false
b. true

Answer 22

true

Question 23

Which virus uses reverse transcriptase for its multiplication?

a. Hepatitis A virus.
b. Hepatitis E virus.
c. Hepatitis B virus.
d. Hepatitis C virus.

Answer 23

c. Hepatitis B virus.

Question 24

Arteriviruses cause disease mostly in birds.

a. true
b. false

Answer 24

false

Question 25

Polyoma- and papillomaviruses a. may induce tumour formation. b. have euryxen host range. c. have ssDNA genome. d. are enveloped.

Answer 25

a. may induce tumour formation.

Question 26

The Crimean-Congo haemorrhagic fever virus is transmitted by a. mosquitoes. b. rodents. c. bats. d. ticks.

Answer 26

d. ticks.

Question 27

Some reoviruses are transmitted by insect vectors. a. false b. true

Answer 27

true

Question 28

Zoonotic viruses can be found in the a. Circoviridae family. b. Birnaviridae family. c. Polyomaviridae family. d. Togaviridae family.

Answer 28

d. Togaviridae family.

Question 29

The turkey herpesvirus induces cross-protection against Marek’s disease. a. false b. true

Answer 29

true

Question 30

In the Picornavirales order, we can find honeybee pathogen viruses. a. false b. true

Answer 30

true

Question 31

Picornaviruses use reverse transcriptase enzyme for their multiplication. a. false b. true

Answer 31

false

Question 32

Reo- and birnaviruses a. have a segmented genome. b. have binal symmetry. c. use cellular transcriptase for the multiplication. d. are enveloped.

Answer 32

a. have a segmented genome.

Question 33

The maintaining hosts of the Marburg virus are a. bats. b. mosquitoes. c. African rodent species. d. ticks.

Answer 33

a. bats.

Question 34

The arenavirus virion contains ribosomes. a. true b. false

Answer 34

a. true

Question 35

Which statement is false? a. Ether inactivates the capripoxviruses. b. Ether inactivates the leporipoxvíruses. c. Ether inactivates the parapoxviruses. d. Ether inactivates the suipoxviruses.

Answer 35

d. Ether inactivates the suipoxviruses.

Question 36

The symmetry of caliciviruses is pleomorphic. a. true b. false

Answer 36

false

Question 37

Polyomaviruses can multiply only in dividing cells. a. true b. false

Answer 37

false

Question 38

The rhabdovirus genome is segmented. a. true b. false

Answer 38

false

Question 39

Does not belong to Simplexvirus genus: a. Simian herpes (B) virus. b. Bovine herpesmamillitis virus. c. Aujeszky’s disease virus. d. Human genital herpes virus.

Answer 39

c. Aujeszky’s disease virus.

Question 40

Parvo- and circoviruses cannot be propagated in vitro. a. true b. false

Answer 40

false

Question 41

Hepeviruses a. cause respiratory infections. b. are potentially zoonotic. c. are transmitted by insect vectors. d. have weak resistance in the environment.

Answer 41

b. are potentially zoonotic.

Question 42

The African swine fever virus causes intracytoplasmic inclusion bodies. a. false b. true

Answer 42

true

Question 43

Which statement is true? a. Some orthomyxoviruses are arboviruses. b. Orthomyxoviruses cause myxomatosis in rabbits. c. Orthomyxoviruses infect only terrestrial animals. d. The mutation rate of orthomyxoviruses is very low.

Answer 43

a. Some orthomyxoviruses are arboviruses.

Question 44

Coronaviruses are sensitive to detergents. a. false b. true

Answer 44

true

Question 45

Adenoviruses a. cause latent infection. b. are enveloped. c. mostly cause respiratory and enteric diseases. d. cannot be propagated in vitro.

Answer 45

c. mostly cause respiratory and enteric diseases.

Question 46

Astroviruses a. are sensitive to low pH. b. are fish pathogens. c. may cause disease in human. d. cause splenomegaly and hepatomegaly in chicken.

Answer 46

c. may cause disease in human.