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  • Question
  • Which of the following is the spike antigen of HIV-I?


  • Options
  • A. gp 120
  • B. gp 140
  • C. gp 36
  • D. gp 41

  • Correct Answer
  • gp 120 


  • Retroviridae problems


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    • 1. HIV or Human Immunodeficiency Virus is considered unique because each virus contains:

    • Options
    • A. more than 100 copies of the viral genome
    • B. a genome made up of both DNA and RNA components
    • C. a viral enzyme known as reverse transcriptase
    • D. sticky proteins that allow it to bind tightly to host cells
    • Discuss
    • 2. Parasitic infection/s frequently observed in HIV disease is / are.

    • Options
    • A. cryptosporidiosis
    • B. toxoplasmosis
    • C. isosporiasis
    • D. all of these
    • Discuss
    • 3. The commonest bacterial infection in HIV disease is/are

    • Options
    • A. mycobacterial infection
    • B. salmonella infection
    • C. bartonella infection
    • D. all of these
    • Discuss
    • 4. A viral load test detects the

    • Options
    • A. provirus of HIV in infected cells
    • B. total amount of virus in the infected host
    • C. number of viruses being released by each infected cell
    • D. amount of bacteriophage being produced by E. coli cells
    • Discuss
    • 5. The cells most oftenly infected by HIV are

    • Options
    • A. Null cells
    • B. CD8 + T lymphocytes
    • C. CD4 + T lymphocytes
    • D. None of these
    • Discuss
    • 6. Which of the following is transmembrane pedicle antigen of HIV-I?

    • Options
    • A. gp 41
    • B. gp 140
    • C. gp l20
    • D. gp 36
    • Discuss
    • 7. Viral infections frequently observed in HIV disease is /are

    • Options
    • A. herpes simplex
    • B. varicella- zoster
    • C. cytomegalo virus
    • D. all of these
    • Discuss
    • 8. The screening test/s for diagnosis of HIV infection is/are

    • Options
    • A. ELISA
    • B. Latex agglutination
    • C. Dot blot assay
    • D. all of these
    • Discuss
    • 9. The confirmatory test(s) for HIV infection is/are

    • Options
    • A. virus isolation
    • B. detection of p24 antigen
    • C. detection of viral nucleic acid
    • D. all of the above
    • Discuss
    • 10. HIV can infect

    • Options
    • A. Microglial cells
    • B. M (membranous) cells
    • C. CD4 + T lymphocytes
    • D. All of these
    • Discuss


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