Quiz 1

Question 1

_________________ is a viral family that exhibits a circular viral genome.

Answer 1

Papillomaviridae or Circoviridae

Question 2

_________________ is a viral family that exhibits helical symmetry.

Answer 2

Paramyxoviridae or Rhabdoviridae

Question 3

____________ viruses are readily inactivated by lipid solvents, such as chloroform and ether, and by various detergents.

Answer 3

enveloped

Question 4

_______________ are knob-like projections from the envelope of certain viruses that are formed by oligomers of envelope glycoproteins.

Answer 4

Peplomers

Question 5

_______________ is a viral family that uses RNA-dependent DNA polymerase (also called reverse transcriptase) to produce single-stranded DNA from a strand of viral RNA.

Answer 5

Retroviridae

Question 6

___________ is an enzyme involved in replication of some RNA viruses. This enzyme lacks stringency in proof-reading the replicated viral genome and is associated with high mutation rates in progeny RNA viruses.

Answer 6

RNA polymerase

Question 7

Rabies virus causes characteristic eosinophilic intracytoplasmic ___________ ____________ (two words) in cells of the cerebrum of infected animals.

Answer 7

Negri bodies

Question 8

-a virus transmitted via arthropod vectors (includes viruses in Togaviridae, Flaviviridae, Rhabdoviridae, Reoviridae, Asfarviridae, and Bunyaviridae).

Answer 8

Arbovirus

Question 9

can occur randomly in RNA viruses with segmented genomes. This mixing of the various segments of a segmented genome when a cell is infected with multiple viruses results in rapid antigenic shift in the epidemiology of influenza virus.

Answer 9

Reassortment

Question 10

These particles or mutants require the presence of a complementing, helper virus (usually the wild-type virus) for replication. Most of these are deletion mutants and display an advantage in replicating their genome and packaging this defective shortened genome into capsids encoded by the wild-type helper virus.

Answer 10

Defective interfering viral particles

Question 11

encoded by the viral genome and incorporated into the appropriate cellular membrane which becomes the viral envelope

Answer 11

Envelope glycoproteins

Question 12

-a subviral agent composed of nucleic acid that depends on the co-infection of a host cell with a helper or master virus for its multiplication and encoding of the capsomeres in which it is encapsidated

Answer 12

Satellite virus

Question 13

is the ability of an organism to infect a host and cause disease.

Answer 13

Pathogenicity

Question 14

________ cell lines are derived from either normal or neoplastic tissue and can be passaged indefinitely.

Answer 14

Continuous