Lec 1-5 - Virology Flashcards Preview

Dental Microbiology > Lec 1-5 - Virology > Flashcards

Flashcards in Lec 1-5 - Virology Deck (29):
1

animal viruses are between blank and blank in diameter

25-300 nm

2

classic EM technique to look at viruses

negative staining

3

new EM technique to look at viruses

cryoEM

4

viral genome can be blank or blank but not both

dna, rna

5

viral genome is blank stranded

single or double

6

positive polarity viral genome means blank but a virus can be negative polar as well

message sense

7

these viruses are infectious on their own

dna, positive stranded rna

8

all rna viruses except those with sing strand positive polarity genome requires a blank to become infectious

virion

9

where the genome is in a virus

core

10

protein shell encasing viral genome

capsid

11

capsid with genome of virus

nucleocapsid

12

lipid bilayer with viral proteins inserted

envelope

13

viral glycoproteins in the envelope called spike

peplomer

14

infections viral particle

virion

15

every virus has a blank that surrounds the blank and is usually icosahedral or helical

capsid, genome

16

if a virus has a blank, it is derived from a blank

envelope, host cell membrane

17

classification of viruses based on structure

family, sub family, genus, species

18

dna viruses are all blank excepto for parvoviruses

double stranded

19

there are no blank shape animal viruses

naked helical

20

all viruses are blank

haploid

21

all retroviruses are blank

diploid

22

steps of virus growth cycle

attachment, penetration, uncoating, replication, assembly, maturation/release

23

viruses are known as blank parasites because they need the cell to replicate

obligate intracellular parasites

24

viruses are replicated by blank... not by binary fission

assembly line kind of

25

dna codes for rna primed rna polymerase to create a negative strand in blank replication

positive ss rna replication

26

rna primed rna polymerase makes complement positive strand which can go into the genome or function as a message to make more protein... must be converted to positive

negative ss rna replication

27

replication where ds intermediate integrates into cell dna

retrovirus replication

28

this replication also requires a virion rna polymerase

ds rna polymerase

29

first step of this replication is to convert it to dsDNA

ss DNA