Concept explainers
Introduction:
HIV (human immunodeficiency virus) and AIDS (acquired immune deficiency syndrome) is a viral infection that is either acquired or congenital. Acquired HIV/AIDS occurs through contact with the blood, semen, vaginal secretions, breast milk, and amniotic fluid of carriers.
Answer to Problem 24A
Correct Answer:
Option (A) viral RNA is used to make DNA.
Explanation of Solution
Explanation/justification for the correct answer:
Option (A) viral RNA is used to make DNA. The retroviruses are the viruses having RNA as a genome. As the virus need to produce viral protein using the host’s
Explanation for incorrect answer:
Option (B) Viral DNA is used to make RNA. The retrovirus including HIV have RNA as a genome, so, they need to convert RNA to DNA first. Hence, it is an incorrect answer.
Option (C) Protein is made directly from viral RNA. The retro virus needs the conversion of RNA to DNA for using host’s machinery of transcription and translation. Hence, it is not correct.
Option (D) Protein is made directly from viral DNA. The retro virus needs the conversion of RNA to DNA for using host’s machinery of transcription and translation. Hence, it is an incorrect answer.
Chapter 18 Solutions
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