AP BIOLOGY

Detailed explanation-1: -HIV (Human Immunodeficiency Virus) is a virus that attacks the immune system. (The immune system fights infections and diseases in a person’s body.) Over time, HIV weakens a person’s immune system so it has a very hard time fighting diseases. HIV causes AIDS (Acquired Immune Deficiency Syndrome).

Detailed explanation-2: -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-3: -HIV attacks a specific type of immune system cell in the body. It’s known as the CD4 helper cell or T cell. When HIV destroys this cell, it becomes harder for the body to fight off other infections.

Detailed explanation-4: -HIV is a unique human RNA virus, capable of infecting cells of the immune system. Specifically, HIV targets T helper cells (CD4 cells), leading to the eventual death of the cell. CD4 cells are vital players in the regulation of immune responses to invading microorganisms.

Detailed explanation-5: -As a result, your body’s cells do not get enough oxygen, and you feel tired and weak. Having other infections that can happen with HIV. These are called opportunistic infections. HIV weakens your body’s defence system, so it has a harder time fighting off illness.