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Home Microbiology Viruses in Eukaryotes See What Others Are Saying!
  • Question
  • Which of the following virus is always detectable after infections?


  • Options
  • A. Hepatitis B virus
  • B. Herpes simplex virus
  • C. Varicella-zoster virus
  • D. Cytomegalovirus

  • Correct Answer
  • Hepatitis B virus 


  • More questions

    • 1. Which of the following enzyme is used for synthesis of RNA under the direction of DNA?

    • Options
    • A. RNA polymerase
    • B. DNA ligase
    • C. DNA polymerase
    • D. RNA ligase
    • Discuss
    • 2. All infections do not cause fever and all fevers are not due to infections which of the following is an example of non-infections cause of fever?

    • Options
    • A. Typhoid
    • B. Chicken pox
    • C. Rheumatic disease
    • D. Malaria
    • Discuss
    • 3. The relationship between an oxidation-reduction potential difference and the standard free energy change is (where n is the number of moles of electron transferred, F= Faraday's constant and E°= standard oxidation-reduction potential difference)

    • Options
    • A. ?G° = -nFE°
    • B. ?G° = nFE°
    • C. ?G° = -nFlnE°
    • D. ?G° = nFlnE°
    • Discuss
    • 4. Intracellular structures formed during many viral infections, called __________ , which can directly disrupt cell structure.

    • Options
    • A. prokaryotes
    • B. chromosomal disruptions
    • C. inclusion bodies
    • D. cytocidal bodies
    • Discuss
    • 5. Viroids are composed of

    • Options
    • A. single-stranded DNA
    • B. double-stranded DNA
    • C. single-stranded RNA
    • D. double-stranded RNA
    • Discuss
    • 6. Virulent and nonvirulent viruses may not

    • Options
    • A. inhibit host cell DNA synthesis
    • B. inhibit host cell RNA synthesis
    • C. stimulate host cell macromolecule synthesis
    • D. degrade host cell DNA
    • Discuss
    • 7. Antibodies to which of the following antigens of Bacillus anthracis are protective?

    • Options
    • A. Capsular polypeptide
    • B. Somatic polysaccharide
    • C. Anthrax toxin
    • D. None of these
    • Discuss
    • 8. Which of the following is a characteristic unique to the ciliates?

    • Options
    • A. Use of cilia as a sensory function
    • B. Presence of both a macronucleus and several micronuclei
    • C. Both (a) and (b)
    • D. Possess a light-detecting eye spot
    • Discuss
    • 9. Which of the following virus is always detectable after infections?

    • Options
    • A. Hepatitis B virus
    • B. Herpes simplex virus
    • C. Varicella-zoster virus
    • D. Cytomegalovirus
    • Discuss
    • 10. The expression of gene X (which has promoter Px) is to be monitored. A gene fusion construction for carrying this work will

    • Options
    • A. have Px but not the rest of the X coding region
    • B. have the promoter of lacZ or some other reporter gene
    • C. allow to monitor the expression of all genes with a promoter similar in sequence to Px
    • D. give the same information as from a microarray
    • Discuss


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