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Systematics Viruses Viroids Prions - Questions and Answers

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126. Which is absent in virus?
A. Genetic material
B. Protein cover
C. Protoplasm
D. Both A and B
Explanation:
127. Coliphage ø x 174 virus contains
A. Single stranded RNA
B. Double stranded RNA
C. Single stranded DNA
D. Double stranded DNA
Explanation:
128. A virus with as DNA is
A. ø x 174
B. Coliphage fd
C. Coliphage MS2
D. All the above
Explanation:
129. Retroviruses and reverse transcriptase were discovered by
A. Sinsheimer
B. Stanley
C. Temin and Baltimore
D. Hershey and Chase
Explanation:
130. Viruses are
A. Obligate parasites
B. Obligate saprophytes
C. Partial parasites
D. Facultative parasites
Explanation:
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