Lecture 18 Virus intro Flashcards
1
Q
virus definition
A
acellular
obligate intra pathogen
no metabolism
2
Q
most basic virion structure
A
nucleocapsid = nucleic acid in protein coat capsid
3
Q
envelope composition
A
lipid
4
Q
capsid composition
A
protomer
symmetry arrangement
5
Q
helical + example
A
helical coronavirus, also enveloped
6
Q
icosahedral symmetry
A
20 polyhedron (eq triangle) 5-6 protomer = capsomer 3 capsomer = triangle (1/20)
ie adenovirus
enveloped herpes simplex
7
Q
binal symmetry
A
icosahedral head
helical tail
(t4 bacteriophage)
8
Q
complex symmetry
A
conform to none
poxvirus
9
Q
genome shapes
A
linear
circular
segmented
10
Q
4 nucleic acid configurations
A
dsDNA bacteriophage
ssDNA parvovirus (rare)
dsRNA reovirus (rare)
ssRNA coronavirus
11
Q
ssRNA categories
A
+ (corona)
- (influenza)
12
Q
viral host types
A
clinical (symptomatic, may lethal)
reservoir (asymptomatic, non lethal)
