Retroviridae – Section 1

6. The commonest opportunistic infection in AIDS patient in India is

A. cryptosporidiosis
B. toxoplasmosis
C. tuberculosis
D. cryptococcosis

Correct Answer: C. tuberculosis

7. HIV belongs to the family retroviridae and sub-family

A. Oncovirinae
B. Lentivirinae
C. Spumavirinae
D. None of these

Correct Answer: B. Lentivirinae

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

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

Correct Answer: C. a viral enzyme known as reverse transcriptase

9. Which of the following is the transmembrane pedicle antigen of HIV-I?

A. gp 41
B. gp 140
C. gp l20
D. gp 36

Correct Answer: A. gp 41

10. The confirmatory test(s) for HIV infection is/are

A. virus isolation
B. detection of p24 antigen
C. detection of viral nucleic acid
D. all of the above

Correct Answer: D. all of the above

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