Genetic material of bacteria include()
A. nuclear and plasmid
B. nuclear, plasmid and mesosome
C. nuclear, plasmid and prophage
D. nuclear and prophage
E. none of the above
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Incubation period of HIV infection is ()
A. a few days
B. a few weeks
C. a few months
D. a few years
E. none of the above
The important spikes of HIV are gp120 and ()
A. gp24
B. gp7
C. gp41
D. gp9
E. none of the above
As for the descriptions of HIV pathogenesis, Which of the following is false ()
A. HIV infringes upon CD4 cells, and propagate to damage the cell
B. HIV envelope glycoprotein combine with CD4 molecule on the surface of CD4+ T cells
C. HIV destroy CD8 cells and cause cellular immunity depression
D. HIV causes CD4/CD8 comparison upside down due to TH decrease after infection
E. none of the above
The mode of virus replication is ()
A. binary fission
B. elemantary body and reticulate body
C. Spore, hypha
D. self replication
E. none of the above
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