Question

Select the right sequence regarding replication of HIV in a cell.

i) Reverse transcription of Viral RNA to viral DNA.
ii) Viral DNA incorporationin host DNA.
iii) Trnascription of viral DNA to viral RNA.
iv) Translation of viral RNA and synthesis of viral proteins.
v) Copies of HIV viruses.

• A. I --- II --- III --- IV --- V
• B. II --- III --- IV --- I --- V
• C. II --- I --- III --- IV --- V
• D. V --- II --- I --- III --- IV

Answer 1

The correct option is A I --- II --- III --- IV --- V

When a virus attacks a cell, it starts replicating using the cell's machinery. In the case of a virus with RNA as its genome such as HIV, it undergoes reverse transcription to form viral DNA. The viral DNA gets incorporated in the host cell's DNA. During the normal transcription and translation of the host DNA, viral RNA and viral proteins (envelope, capsid, enzymes) are synthesised and as result, copies of viruses are released from the infected cell.