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MCQs

Total Questions : 463 | Page 2 of 47 pages
Question 11. When a virus enters a cell but does not replicate immediately, the situation is called
  1.    lysogeny
  2.    fermentation
  3.    symbiosis
  4.    synergism
 Discuss Question
Answer: Option A. -> lysogeny
Answer: (a).lysogeny
Question 12. The first step in infection of a host bacterial cells by a phage is
  1.    adsorption
  2.    absorption
  3.    penetration
  4.    replication
 Discuss Question
Answer: Option A. -> adsorption
Answer: (a).adsorption
Question 13. Usually viruses are separated into several large groups based primarily on
  1.    nature of the host
  2.    nucleic acid characteristics
  3.    capsid symmetry
  4.    diameter of the viroin or nucleocapsid
 Discuss Question
Answer: Option A. -> nature of the host
Answer: (a).nature of the host
Question 14. The viral nucleocapsid is the combination of
  1.    genome and capsid
  2.    capsid and spikes
  3.    envelope and capsid
  4.    capsomere and genome
 Discuss Question
Answer: Option A. -> genome and capsid
Answer: (a).genome and capsid
Question 15. Which of the following viruses has not been associated with human cancer?
  1.    Hepatitis C virus
  2.    Hepatitis B virus
  3.    Varicella-Zoster virus
  4.    Herpes simplex virus type 2
 Discuss Question
Answer: Option C. -> Varicella-Zoster virus
Answer: (c).Varicella-Zoster virus
Question 16. Edward Jenner began inoculating humans with material from __________ lesions.
  1.    Smallpox
  2.    Avianpox
  3.    Cowpox
  4.    Chickenpox
 Discuss Question
Answer: Option C. -> Cowpox
Answer: (c).Cowpox
Question 17. The viruses in an attenuated vaccine
  1.    have no genome
  2.    continue to replicate
  3.    are usually larger than bacteria
  4.    is altered with chemicals
 Discuss Question
Answer: Option B. -> continue to replicate
Answer: (b).continue to replicate
Question 18. Enveloped viruses have a __________ shape.
  1.    icosahedral
  2.    helical
  3.    roughly spherical
  4.    complex
 Discuss Question
Answer: Option C. -> roughly spherical
Answer: (c).roughly spherical
Question 19. Which of the following is semi-continuous (diploid) cell line?
  1.    HeLa
  2.    HEp-2
  3.    WI-38
  4.    KB
 Discuss Question
Answer: Option C. -> WI-38
Answer: (c).WI-38
Question 20. The envelope of which of the following viruses is derived from the host cell nucleus?
  1.    Paramyxoviruses
  2.    Retroviruses
  3.    Orthomyxoviruses
  4.    Herpesviruses
 Discuss Question
Answer: Option D. -> Herpesviruses
Answer: (d).Herpesviruses

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