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Home Microbiology Viruses From Animal and Plants Comments

  • Question
  • Viropexis takes place in the phagocytic vacuoles and is due to the action of enzymes


  • Options
  • A. DNA gyrase
  • B. lysosomal protease
  • C. lysosomal lipase
  • D. all of these

  • Correct Answer
  • lysosomal protease 


  • Viruses From Animal and Plants problems


    Search Results


    • 1. Mumps vaccine is prepared from the cultures of

    • Options
    • A. chick fibroblasts
    • B. African green monkey cells
    • C. healthy calves
    • D. sheep
    • Discuss
    • 2. Influenza virus undergoes antigenic shift resulting in major antigenic changes by which of the following mechanisms?

    • Options
    • A. Somatic recombination of heavy and light chains
    • B. Expression of several different capsule types
    • C. Changing the receptor binding canyon that docks with the host receptor
    • D. Reassortment of RNA segments from different influenza viruses
    • Discuss
    • 3. Animal viruses with capsids displaying helical symmetry include

    • Options
    • A. measles and mumps
    • B. influenza
    • C. rabies
    • D. all of these
    • Discuss
    • 4. What is the function of positive strand in double stranded RNA viruses?

    • Options
    • A. Synthesis of protein
    • B. Production of ribosomes
    • C. Both (a) and (b)
    • D. None of these
    • Discuss
    • 5. Which type of interferon is produced by virus-infected cells?

    • Options
    • A. ?
    • B. ?
    • C. Both (a) and (b)
    • D. None of these
    • Discuss
    • 6. Negri bodies are found in cells infected with

    • Options
    • A. Paramyxoviruses
    • B. Vaccinia virus
    • C. Fowlpox virus
    • D. Rabies virus
    • Discuss
    • 7. The RNA sarcoma viruses, the most strongly transforming viruses may transform which of the following cells in a culture?

    • Options
    • A. fibroblasts
    • B. myoblasts
    • C. iris epithelial
    • D. all of these
    • Discuss
    • 8. The two major components of viruses are

    • Options
    • A. fat and protein
    • B. nucleic acid and protein
    • C. carbohydrate and nucleic acid
    • D. fat and carbohydrate
    • Discuss
    • 9. The penetration of animal viruses into attached cells occur by mechanisms consisting of engulfment of whole virions by the cells in a phagocytic process called

    • Options
    • A. vitropexis
    • B. viropexis
    • C. ectodesmata
    • D. vivopexis
    • Discuss
    • 10. The transcription of the viral nucleic acid into mRNA is not necessary in case of

    • Options
    • A. RNA viruses
    • B. ds DNA viruses
    • C. ss DNA viruses
    • D. all of these
    • Discuss


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