Question

Read the following statements regarding the HIV virus.
A. It is a type of retrovirus that has an envelope enclosing the diploid RNA genome.
B. It multiplies in helper T cells and produces progeny virus.
C. In the macrophages of the host, the RNA genome of the virus replicates to form viral DNA.
D. Reverse transcriptase becomes inactive in the host cell.
How many of the above statements are correct?

• A. One
• B. Two
• C. Four
• D. Three

Answer 1

The correct option is B Two

• HIV is an enveloped retrovirus. Each virus particle contains two copies of an RNA genome. Hence, HIV is a type of retrovirus that has an envelope enclosing the diploid RNA genome.
• HIV infects white blood cells in the body’s immune system called helper T cells. The virus attaches itself to the helper T cells.
• In macrophages of the host cell, the RNA genome converts into DNA by reverse transcriptase enzyme and incorporated into the host DNA to produce viral DNA.
• Without reverse transcriptase, the viral genome couldn't become incorporated into the host cell, and couldn't reproduce.

So, the correct option is 'Two'.