Viruses – Section 1


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21. The lysogenic state is governed by the activity of the regulatory region of the lambda phage genomes; this region is termed as

A. immunity repressor
B. immunity operon
C. operon repressor
D. none of these

Correct Answer: B. immunity operon
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22. The capsomeres consist of a number of proteins subunits or molecules called

A. protomers
B. caproprotein
C. procapsid
D. none of these

Correct Answer: A. protomers
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23. In order for a virus to replicate

A. the capsid must enter the host cell cytoplasm
B. the host cell must be undergoing mitosis
C. the genome must be released in the cytoplasm
D. the host cell must lack a cell membrane

Correct Answer: C. the genome must be released in the cytoplasm
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24. Which of the following viruses belong to family Flaviviridae?

A. Rubella virus
B. Yellow fever virus
C. Hepatitis C virus
D. All of these

Correct Answer: D. All of these
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25. Which of the following viruses show/s transformation of infected cells?

A. Hepatitis B virus
B. Human T cell lymphotronic virus type I
C. Epstein-Barr virus
D. All of these

Correct Answer: D. All of these
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