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1. Animal viruses with capsids displaying helical symmetry include
A. measles and mumps
B. influenza
C. rabies
D. all of these
2. Icosahedral viruses are generally
A. polio viruses
B. adeno viruses
C. both (a) and (b)
D. none of these
3. Negative strand ssRNA viruses need to have a preformed replicase when they invade a mammalian cell because they
A. use it to terminate transcripts when they copy host cell mRNA
B. have to make a positive strand copy that can be translated
C. use it to modify host enzymes that are recruited for viral replication
D. none of the above
4. Which of the following reflects the correct order of events that take place during the multiplication of a virus?
A. Attachment, penetration, maturation, biosynthesis, release
B. Penetration, attachment, biosynthesis, maturation, release
C. Attachment, penetration, biosynthesis, maturation, release
D. Attachment, release, biosynthesis, maturation, penetration
5. What can be coated to the plastic dish if an ELISA is performed to directly detect polio virus?
A. Patient serum
B. Anti-polio antibody
C. Polio capsid protein
D. Colored substrate
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