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Systematics Viruses Viroids Prions - Questions and Answers

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196. Polio Virus has
A. ssDNA
B. ds DNA
C. ssRNA
D. dsRNA
Explanation:
197. The stage following infection by virus when virus particles cannot be observed is
A. Infection phase
B. Eclipse phase
C. Maturation phase
D. Lysogenic phase
Explanation:
198. Mature virus particle is
A. Virion
B. Viricide
C. Capsid
D. Peplomer
Explanation:
199. Largest known virus is
A. TMV
B. T1 phage
C. Citrus tristeza
D. ø x 174
Explanation:
200. Viruses cannot multiply of their own because they
A. Do not have sex organs
B. Lack genetic material
C. Lack cellular machinery to use its genetic material
D. None of the above
Explanation:
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