Which of the following is a characteristic of the human immunodeficiency virus (HIV), which causes acquired immunodeficiency syndrome (AIDS)?
A) HIV only infects T-helper cells.
B) HIV is a retrovirus.
C) Infection does not require a host cell receptor.
D) After infection, cell death is immediate.

Question

Quizplus · Accepted Answer

HIV is a retrovirus, which means that it uses RNA as its genetic material and has the enzyme reverse transcriptase to convert its RNA into DNA. This DNA is then integrated into the host cell's genome and used to produce new viral particles. HIV infects a variety of cells, including T-helper cells, macrophages, and dendritic cells, but it does require a host cell receptor (usually CD4) to gain entry into cells. HIV infection does not cause immediate cell death, but rather a gradual depletion of CD4+ T-helper cells over time, leading to immune dysfunction and the development of AIDS.

Which of the Following Is a Characteristic of the Human