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