题目内容

What is not anabolic product of bacteria ()

A. endotoxin
B. exotoxin
C. anti-toxin
D. pigment
E. none of the above

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Which of the following can kill the spores ()

A. disinfection
B. antisepsis
C. asepsis
D. sterilization
E. none of the above

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

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

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