Question

HIV acts by attaching to receptors on the surfaces of T-cells that aid other lymphocytes in fighting infection. Once HIV is inside a cell, its RNA is reverse-transcribed and its product DNA is integrated into the host cell. It then directs the production of new virus particles. As time goes on the number of T-cells A) increases. B) decreases. C) stays the same. D) is unpredictable.

Answer 1

Answer:

B) decreases.

Explanation:

    The HIV virus acts within the cells of the immune system, responsible for the body's defense. After entering the cell, HIV begins to act and integrate into the genetic code of the infected cell. The cells most affected by the virus are called T-CD4, which are used by HIV to make copies of itself.

    Each time this cell, when infected, divides, it produces a copy of its genetic code and, at the same time, a copy of the virus's genetic code.

    Infected by the virus, the cells of the immune system begin to function less efficiently until, over time, the body's ability to fight common diseases diminishes and is subject to the onset of opportunistic diseases.

Answer 2

HIV acts by attaching to receptors on the surfaces of T-cells that aid other lymphocytes in fighting infection. Once HIV is inside a cell, its RNA is reverse-transcribed and its product DNA is integrated into the host cell. It then directs the production of new virus particles. As time goes on the number of T-cells B) decreases.