Develop a concept map showing the structure and function of ecosystems.
Lecture Twenty Three: HIV/AIDS Retroviruses contain 2 identical RNA strands and replicate with reverse transcriptase (turns RNA into DNA) A provirus is the DNA copy of the viral RNA and it integrates randomly into the host cell Retroviruses share three structural genes: gag, pol, env. Pol encodes enzymes required for the life cycle (reverse transcriptase, integrase, and proteases) During reverse transcriptase the promoter is duplicated and put upstream in the genome, you need a second promoter so that the virus that is created to infect other cells has a promoter Steps for Infection: 1. HIV binds to the target cell (with the viral spike proteins on its envelope)) 2. Nucleocapsid