Lesson 4.3: Classification of viruses

Question 1

The _______ classification classifies the viruses according to the presence of _____, _____, and _____

Answer 1

Baltimore
nucleic acid
strandedness
sense
method of replication

Question 2

Baltimore classification is defined in ____ by _____

Answer 2

1971
David Baltimore

Question 3

It groups the viruses in _____ designated by roman numerals

Answer 3

7

Question 4

Aside form this classification viruses can also be classified according to _____ or _____

explain why they are not reliable

Answer 4

associated disease or morphology

-multiple viruses can cause disease similar disease
-hard to determine due to limited magnification of the microscopes

Question 5

Baltimore classification are classified according to their ______

Answer 5

genome

Question 6

Viruses from similar group have similar _____

significance of this

Answer 6

behavior
create vaccines that targets specific classes

Question 7

CLASS I
genome
examples

Answer 7

ds DNA
Herpes virus. poxvirus. adenoviruses

Question 8

CLASS II
genome
examples

Answer 8

ss DNA with (+) DNA
Parvoviruses (infects dogs)

Question 9

CLASS III
genome
examples

Answer 9

ds RNA
Reovirus

Question 10

CLASS IV
genome
examples

Answer 10

(+) ss RNA
Toga viruses, picornaviruses, cornovirus (SARS-CoV-2)

Question 11

CLASS V
genome
examples

Answer 11

(-) ss RNA
Rhabdoviruses, Orthomyxovirus

Question 12

CLASS VI
genome
examples

Answer 12

ss RNA-RT w/ (+) RNA w/ DNA intermediate
Retroviruses

Question 13

Class VII
genome
example

Answer 13

ds DNA-RT
example: Hepadnaviruses