You have inoculated and incubated a Kligler’s iron agar with a gram-negative rod. Following 24 hours of incubation, there is evidence of good growth on the slant, the slant is red, and the butt is unchanged (orange-red). Which of the following represent(s) the best interpretation of these results?

a. glucose was fermented
b. glucose was not fermented
c. lactose was not fermented
d. lactose was fermented
e. peptones were metabolized aerobically
f. peptones were metabolized anaerobically
g. H2S was produced
h. H2S was not produced


Ans:
b. glucose was not fermented
c. lactose was not fermented
e. peptones were metabolized aerobically
h. H2S was not produced

Biology & Microbiology

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