Which of the following is the most effective wavelength of UV ()
A. 200nm
B. 265nm
C. 300nm
D. 560nm
E. none of the above
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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
Which antibiotic should be preferred to treat the infection of streptococci? ()
A. strptomycin
B. penicillin
C. metronidazole
D. erythromycin
E. none of the above