题目内容

HIV mainly infringe ()

A. T cell
B. CD8 cell
CD4 cell
D. B cell
E. none of the above

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Which of the following is the most effective wavelength of UV ()

A. 200nm
B. 265nm
C. 300nm
D. 560nm
E. none of the above

Genetic material associated with bacterial resistance is()

A. Mycobacterium
B. Plasmid
C. Bacterial chromosome
D. phage
E. none of the above

Bacterial pathogenicity depends mainly on the bacterial ()?

A. Morphology
Basic structure and special structure
C. Invasion and toxins
D. Invasion of the body parts
E. none of the above

Bacteria invade the blood and in which a large number of breeding, resulting in toxic metabolites, causing serious damage to the body ()

A. Septicemia
B. toxemia
C. bacteremia
D. Pyemia
E. none of the above

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