Viral Identification

Question 1

Naked DNA viruses

Answer 1

Circoviridae
Parvo-
Papova-
Adeno-

Question 2

Enveloped DNA viruses

Answer 2

Hepadnaviridae
Herpes-
Asfa-
Irido-
Pox-

Question 3

DNA viruses

Answer 3

Circo-
Parvo-
Hepadna-
Papova-
Adeno-

Herpes-
Asfa-
Irido-
Pox-

Question 4

Naked RNA viruses (indicate which are segmented!)

Answer 4

Picornaviridae
Calici-
Astron-

Reo- (segmented!)
Birna- (segmented!)

Question 5

Enveloped RNA viruses (indicate which are segmented and which are diploid!)

Answer 5

Flavi-
Toga-
Arteri
Corona
Rhabdo
Filo
Paramyxo

Orthomyxo- (segmented!)
Bunya (segmented!)
Arena (segmented!)

Retro- (diploid!)

Question 6

Which RNA viruses are segmented

Answer 6

Reo-
Birna-

Orthomyxo-
Bunya-
Arena-

Question 7

What is the only diploid virus

Answer 7

Retro-

Question 8

Which naked DNA virus is susceptible to disenfectants? Why

Answer 8

Adeno-

It is naked but it has pentofibers with receptors that can be broken down by disinfectant

Question 9

Which type of viruses are most susceptible to disinfectants

Answer 9

Enveloped viruses (so enveloped RNA viruses + adenoviridae)

Question 10

What type of genomes evolve at the fastest pace

Answer 10

Segmented genomes

Question 11

What protects viral nucleic acid? What is it composed of?

Answer 11

Capsid

Composed of subunits called capsomeres
May contain enzymes and nn-structural proteins (but no organelles)

Question 12

Where do DNA viruses replicate

Answer 12

Nucleus

Question 13

Which DNA virus replicates in cytoplasm

Answer 13

Pox, Asfar

Question 14

Which naked DNA virus replicates in cytoplasm

Answer 14

none!

Question 15

Which enveloped DNA virus replicates in cytoplasm

Answer 15

Asfar

Pox

Question 16

Where do RNA viruses replicate

Answer 16

Cytoplasm

Question 17

Which RNA viruses replicate in nucleus

Answer 17

Orthomyxo

Retro

Question 18

What is sensitivity of light microscope

Answer 18

.3um

Question 19

What is sensitivity of electron microscope

Answer 19

2nm

Question 20

Order
Family
Subfamily
Genus
Species

Answer 20

• virales
• viridae
• virinae
• virus
• virus

Question 21

Which enveloped DNA virus acts as a RNA virus

Answer 21

Pox

Question 22

Definition of virus ***

Answer 22

• Submicroscopic
• Inert while outside host
• Obligate parasite
• Infect wide range of organisms

Question 23

How are viruses classified? Which system is no longer used

Answer 23

International Committee on Taxonomy of Viruses (ICTV)

Baltimore is no longer used

Question 24

What is virus classification based on

Answer 24

Type of genome
Strategy of replication
Structure of virion