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HIV Replication (Quiz 2)

How can HIV remain dormant for years and still replicate? HIV is a retro virus. It contains RNA that is reverse transcribed to DNA. This DNA is then incorporated into the host cell. For long periods the viral DNA can remain inactive and simply get passed on to daughter cells with the host cell genome. No disease symptoms will be shown because the viral DNA is not producing anything. When the HIV DNA is activated it will begin to produce components of the virus. At this point disease symptoms will begin as the infected cells of immune system will be damaged or destroyed by the production of new viruses.

View the animation below, then complete the quiz to test your knowledge of the concept.






1The HIV protein that is involved in attachment of the virus to host cells is
A)reverse transcriptase.
B)gp120.
C)CD4.
D)integrase.
E)protease.



2Which of the following best describes the flow of genetic information in HIV
A)DNA - RNA - Protein
B)DNA - RNA - mRNA - Protein
C)DNA - mRNA - RNA - Protein
D)RNA - mRNA - DNA - Protein
E)RNA - DNA - mRNA - Protein



3Which of the following HIV protein - function combinations is correctly matched?
A)matrix protein - maintenance of viral structure
B)integrase - formation of proviral DNA
C)protease - cleavage of long RNA
D)A and B
E)A, B and C



4The co-receptor required for HIV attachment is the same for all host cells.
A)True
B)False



5HIV leaves an infected cell by breaking down its cell membrane.
A)True
B)False







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