Virus Generalities

Question 1

ALL DNA viruses are icosahedral EXCEPT

Answer 1

Poxvirus

Question 2

Most RNA viruses have helical symmetry EXCEPT

Answer 2

Flaviviruses
Caliciviruses
Reoviruses
Picornaviruses
Togaviruses
Hepevirus

Question 3

All enveloped viruses acquire their envelope from plasma membrane EXCEPT

Answer 3

Herpes virus (nuclear membrane)

Question 4

NAKED DNA VIRUS

Answer 4

Papillomavirus
Adenovirus
Parvovirus
Polyomavirus

Question 5

NAKED RNA VIRUS

Answer 5

Calicivirus
Picornavirus
Reovirus
Hepevirus

Question 6

All viruses are haploid except

Answer 6

Retrovirus

Question 7

RNA viruses have segmented genome

Answer 7

BOAR

Bunyavirus (3 segments)
Orthomyxovirus (8 segments)
Arenavirus (2 segments)
Reovirus (10 segments)

Question 8

Only viruses with double stranded RNA genome

Answer 8

Reoviridae

Question 9

Negative Strand RNA viruses

Answer 9

Always Bring Polymerase Or Fail Replication

Arenavirus
Bunyavirus
Paramyxovirus
Orthomyxovirus
Filovirus
Rhabdovirus

Question 10

Most DNA viruses have both a negative and positive strand EXCEPT

Answer 10

Parvovirus (single stranded DNA genome)

Question 11

All double stranded DNA have icosahedral symmetry EXCEPT

Answer 11

Poxvirus (DNA has complex structural proteins)

Question 12

EXCHANGE of genes between 2 chromosomes by crossing over within base sequence homology

Answer 12

Recombination

Question 13

SEGMENTED viruses exchange genetic material

Answer 13

Reassortment

Question 14

Functional + NONfunctional = Functional

Answer 14

Complementation

Question 15

NO GENE EXCHANGE

Simultaneous infection with 2 viruses

Answer 15

Phenotypic Mixing

Question 16

LIVE VACCINES

Answer 16

MMR
Japanese Encephalitis
Oral Polio
Varicella
Intranasal Influenza
Typhoid fever
BGC
Smallpox

Question 17

DNA Viruses

Answer 17

HHAPPPPy viruses

Hepadnavirus
Herpesvirus
Adenovirus
Poxvirus
Parvovirus
Polyomavirus
Papillomavirus

Question 18

All DNA viruses have double stranded DNA EXCEPT

Answer 18

Parvovirus

Question 19

All DNA viruses have linear DNA EXCEPT

Answer 19

Papilloma
Polyoma
Hepadna

Question 20

All DNA viruses are icosahedral EXCEPT

Answer 20

Poxvirus

Question 21

All DNA viruses replicate in the nucleus EXCEPT

Answer 21

Poxvirus

Question 22

All RNA viruses have single stranded RNA EXCEPT

Answer 22

Reovirus and Rotavirus

Question 23

All RNA viruses replicate in the CYTOPLASM EXCEPT

Answer 23

Influenza and Retrovirus

Question 24

PICORNAVIRIDAE

Answer 24

PERCHed on a PIC

Poliovirus
Echovirus
Rhinovirus
Coxsackievirus
Hepatitis A virus