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Human Health and Disease
Retroviruses: HIV and Oncogenic Viruses
1 question from 1 paper, each with its answer.
- question
- 1
- paper
- 1
- of Human Health and Disease
- 0.83%
Concepts tested
- Life cycle of retroviruses
All Questions
2004 AIPMT 1 question
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Which of the following statements is not true for retroviruses :-Retroviruses (e.g. HIV, and oncogenic viruses such as HTLV) have RNA as their genetic material in the mature virus particle; true.
They carry the gene for the enzyme reverse transcriptase (RNA-dependent DNA polymerase); true.
Inside the host cell, reverse transcriptase copies the viral RNA into DNA. This viral DNA integrates into the host genome as a provirus and is then transcribed to make new viral RNA. So DNA is definitely present at one stage of the life cycle.
Some retroviruses cause certain kinds of cancer in humans (e.g. HTLV-1 causes T-cell leukaemia); true.
So the statement that is not true is: DNA is not present at any stage in the life cycle of retroviruses.