AP BIOLOGY

Detailed explanation-1: -HIV (human immunodeficiency virus) is a virus that attacks the body’s immune system. If HIV is not treated, it can lead to AIDS (acquired immunodeficiency syndrome). There is currently no effective cure. Once people get HIV, they have it for life.

Detailed explanation-2: -HIV belongs to a class of viruses known as retroviruses. Retroviruses use RNA to encode their genetic information rather than DNA, as human cells do.

Detailed explanation-3: -AIDS is the late stage of HIV infection that occurs when the body’s immune system is badly damaged because of the virus. In the U.S., most people with HIV do not develop AIDS because taking HIV medicine as prescribed stops the progression of the disease.