IndiaBIX

Microbiology - Viruses

Exercise : Viruses - Section 1
26.
Which of the following may affect proteins and nucleic acids, but not viruses?
Denaturation
Enzyme treatment
Pressure
All of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
The viral DNA of the temperate phage, instead of taking over the functions of the cell's genes, is incorporated into the host DNA and becomes a prophage in the bacterial chromosome, acting as a gene. This happens in
lysogeny
spontaneous induction
lytic phase
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Which of the following statements is not true of viruses?
Viruses have been successfully grown in pure cultures in test tubes
All viruses are obligatory intracellular parasites
All viruses have either DNA or RNA as their genetic material
Viruses probably arose from small fragments of cellular chromosomes
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Which of the following viruses belong/s to family caliciviridae?
Hepatitis B virus
Hepatitis D virus
Hepatitis E virus
All of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
In the simplest capsid, there is a capsomere at each of the 12 vertices; this capsomere, which is surrounded by five other capsomeres, is termed a
penton
polyhedra
icosahedral
helical
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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