All of the following are physical conditions required for bacteria growth except ()
A. nutrient material
B. pH
C. temperature
D. atmosphere
E. sunlight
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Which is not appearance characteristic of C.diphtheriae
A. Gram positive
B. Corynebacteria
C. alkalescence metachromatic granules
D. palisade arrangement
E. with flagella
Function of flagella is associated with ()
A. Resistance
B. reproduction
C. Adhesion
D. variation
E. Motility
Which body site has no normal flora? ()
A. skin
B. nasopharynx
C. genitalia
D. Intestine
E. blood
Which bacteria is able to ferment lactose slowly? ()
A. Shigella dysenteriae
B. Shigella sonnei
C. Shigella boydii
D. Shigella flexneri
E. mutation of shigella flexneri
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