Part 4 HIV Multiple choice questions

16q: after the HIV viral DNA enters the nucleus of the host cell it is integrated into the host cell chromosomes through the action of another virally encoded enzyme called ?


a. protease
b. integrase
c. DNAse
d. RNAse
e. Reverse transcriptase

answer b . integrase

17q: what are lipid rafts ?


Answer: Budding of the HIV progeny virion occurs through specialized regions in the lipid bilayer of the host cell membrane which are known as lipid rafts, where the core acquires its external envelope .


18q: which of the following are the genes associated with HIV-1 ?


a. gag gene
b. pol gene
c. env gene
d. all the above

answer d . all the above

19q: gag gene encodes which of the following constituents of the HIV-1 virus ?


a. encodes the enzymes responsible for protease processing of viral proteins
b. encodes the envelope glycoproteins
c. encodes the proteins that forms the core of the virion
d. p24 antigen
e. both c and d

answer e . both c and d . core of the virion and p24 antigen

20q: pol gene encodes which of the following constituents of the HIV-1 virus ?


a. encodes the enzymes responsible for protease processing of viral proteins
b. encodes the envelope glycoproteins
c. encodes the proteins that forms the core of the virion
d. p24 antigen
e. both c and d

answer a . enzymes responsible for protease processing of viral proteins