Viruses: Viral genomes

Question 1

DNA viral genomes

Answer 1

All DNA viruses are dsDNA, except Parvovirus

Question 2

DNA viral genomes

Answer 2

All are linear, except Papilloma, Polyoma (circular supercoiled) and Hepadna (partial circular)

Question 3

RNA viral genomes

Answer 3

All RNA viruses are ssRNA, except Reoviridae

Question 4

Positive stranded RNA viruses (I went to Retro Toga party where I drank Flavoured Corona and ate Hippy California Peeckles)

Answer 4

Retrovirus, Togavirus, Flavivirus, Coronavirus, Hepevirus, Calicivirus, Picornavirus

Question 5

Naked viral genome infectivity

Answer 5

Purified nucleic acids of most dsDNA (except Pox and HBV), and (+) strand ssRNA viruses are infectious

Question 6

Naked viral genome infectivity

Answer 6

Naked nucleic acids of (-) strand ssRNA and dsRNA (Reoviridae) viruses are NOT infectious

Question 7

Viral replication

Answer 7

DNA: All replicate in nucleus, except Pox (carries its own DNA-dependent RNA polymerase)
RNA: All replicate in cytoplasm, except Retroviruses

Question 8

Naked (non-enveloped) viruses [Naked CPR and PAPP smear]

Answer 8

RNA: Calicivirus, Picorna, Reovirus;
DNA: Parvovirus, Adenovirus, Papilloma, and Polyoma

Question 9

Enveloped viruses

Answer 9

All enveloped viruses acquire their envelopes from host cell plasma membranes, except Herpesviruses which acquire envelopes from Nuclear membrane

Question 10

DNA viruses (HHAPPPPy)

Answer 10

Hepadna, Herpes, Adeno, Parvo, Pox, Papilloma, and Polyoma

Question 11

DNA viruses

Answer 11

All are icosahedral, except Pox (complex)