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MCQs

Total Questions : 29 | Page 2 of 3 pages
Question 11. Viroids are composed of
  1.    single-stranded DNA
  2.    double-stranded DNA
  3.    single-stranded RNA
  4.    double-stranded RNA
 Discuss Question
Answer: Option C. -> single-stranded RNA
Question 12. Which of the following virus is always detectable after infections?
  1.    Cytomegalovirus
  2.    Herpes simplex virus
  3.    Hepatitis B virus
  4.    Varicella-zoster virus
 Discuss Question
Answer: Option C. -> Hepatitis B virus
Question 13.  Which of the following is the agent associated with the development of neurodegenerative disease in livestock and humans?
  1.    Prions
  2.    Viroids
  3.    virions
  4.    Virinos
 Discuss Question
Answer: Option A. -> Prions
Question 14.  The __________ of the influenza-enveloped virus appear to be involved in attachment to the host cell receptor site.
  1.    fimbriae
  2.    flagellae
  3.    hemagluttinin
  4.    neuraminidase
 Discuss Question
Answer: Option C. -> hemagluttinin
Question 15.  
__________is probably the most important characteristic for classification of viruses in eukaryotes.
  1.    Host preference
  2.    Morphology
  3.    Physical nature of virion constituents
  4.    Chemical nature of virion constituents
 Discuss Question
Answer: Option A. -> Host preference
Question 16.  Intracellular structures formed during many viral infections, called __________ , which can directly disrupt cell structure.
  1.    prokaryotes
  2.    chromosomal disruptions
  3.    inclusion bodies
  4.    cytocidal bodies
 Discuss Question
Answer: Option C. -> inclusion bodies
Question 17.  In cancer, the reversion of cells to a more primitive or less differentiated state is called
  1.    neoplasia
  2.    anaplasia
  3.    metastasis
  4.    oncogenic
 Discuss Question
Answer: Option B. -> anaplasia
Question 18.  Which family has received most interest in their development as a biological control agent against insects?
  1.    Reoviridae
  2.    Baculoviridae
  3.    Iridoviridae
  4.    Poxviridae
 Discuss Question
Answer: Option B. -> Baculoviridae
Question 19.  Viral RNA is replicated in the host cell
  1.    cytoplasmic matrix
  2.    nucleus
  3.    mitochondria
  4.    lysozomes
 Discuss Question
Answer: Option A. -> cytoplasmic matrix
Question 20.  Which of the following has been linked to Kaposi's sarcoma?
  1.    Epstein-Barr virus
  2.    Human T-cell lymphotropic virus
  3.    Human papilloma virus
  4.    Human herpes virus 8
 Discuss Question
Answer: Option D. -> Human herpes virus 8

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