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Which of the following is/are animal virus disease/s?
a) mumps and influenza         
b) polio, measles
c) small pox and HIV
d) all of these

d

Explanation: they contain DNA or RNA but mostly animals viruses contain RNA as genetic material



Viruses are classified by all of the following EXCEPT………
a) size and shape        
b) types of reproduction
c) presence or absence of envelop     
d) type of nucleic acid

b

Phage viruses are parasite only on……
a) plants                                  
b) animals
c) bacteria                 
d) fungi

c

Explanation: e.g. Bacteriophage



The genetic material of plant viruses is mostly…….
a) RNA                                  
b) DNA
c) protein                    
d) fats

b

Structure of the Some Representative Viruses:


Most phages range in size from……….nm in length.
a) 10-200                    
b) 24-200
c) 300-400                  
d) 1000-2000

b

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