Viral replication and taxonomy Flashcards Preview

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Flashcards in Viral replication and taxonomy Deck (21):
1

differentiate + and - RNA viruses

+ means the RNA is like mRNA and is immediately translated by hosts ribosomes
- means the RNA have to be transcribed to + (they need RNA dependent RNA polymerase)

2

What are the only viruses with double stranded RNA

reoviridae

3

what is unique about retroviruses

need reverse transcriptase to convert RNA into DNA
then incorporated into host genome

4

what is the general structure of DNA viruses

+ and negative strands
- is the strand used for making mRNA
+ strand is ignored

5

Which DNA virus has a single strand

parvovirus

6

what are the two shapes of capsids

icosahedral and helical

7

which type of structure are RNA viruses

helical

8

What are the DNA viruses

HHAPPPy
Herpes
Hepadna
Adeno
Papova
Parvo
Pox

9

where do most DNA viruses replicate? what are the exceptions

in the nucleus
poxviridae replicates in cytoplasm

10

What are the DNA viruses that have envelopes

Herpes Hepadna and Pox

11

What are the DNA viruses that are naked

PApova, Adenoa PArvo
PAP- "naked women"

12

what are the nonenveloped RNA viruses

Picorna, Calici and Reoviridae

13

What are the icosohedral RNA viruses

reoviruses, picorna, toga, flavi and calici

14

Which RNA viruses replicate in nucleus

retroviruses and orthomyxoviruses

15

RNA + standed viruses

The CALCIfied emperor PICO is wearing his CROWN and TODA eating FLAVorful grapes form a RETRO bowl
Calici, Pico, Cornoa, Toga, Flaci and Retro

16

RNA - stranded viruses

Old Petes RABid dog FILO fights paul BUNYon in the ARENA
Orthomyxo, paramyxo, Rhabdo, Filo, Bunya, Arena

17

how does adsorption and penetration occur with viruses

endocytosis or membrane fusion with viral envelope

18

what do - RNA viruses have to have with them

viral RNA dependent RNA polymerase

19

What enzyme do retro viruses have

RNA dependent DNA polymerase

20

what are the general outcomes from viral infection

death, transformation (cancer), latent infection and chronic slow infection

21

What are the ds DNA circular viruses

papova and hepadna