AP BIOLOGY

Detailed explanation-1: -A retrovirus is a virus that uses RNA as its genomic material. Upon infection with a retrovirus, a cell converts the retroviral RNA into DNA, which in turn is inserted into the DNA of the host cell. The cell then produces more retroviruses, which infect other cells.

Detailed explanation-2: -A retrovirus is a type of RNA virus. RNA viruses have genes encoded in RNA instead of DNA. Like other viruses, retroviruses need to use the cellular machinery of the organisms they infect to make copies of themselves. Infection by a retrovirus, however, requires an additional step.

Detailed explanation-3: -Retroviruses carry their genome as RNA, and because they replicate via a DNA intermediate, they must also carry the sequence for the promoter that will drive the expression of the genomic RNA.

Detailed explanation-4: -A type of virus that has RNA instead of DNA as its genetic material. It uses an enzyme called reverse transcriptase to become part of the host cells’ DNA. This allows many copies of the virus to be made in the host cells. The virus that causes AIDS, the human immunodeficiency virus (HIV), is a type of retrovirus.

Detailed explanation-5: -How does a retrovirus work? The retrovirus infects the host cell and uses the enzyme reverse transcriptase to convert RNA into DNA. This viral DNA is then integrated into the DNA of the host cell and replicates.