Your are identifying bacteria in your laboratory using different media and biochemical tests. from a Salmonella-Shigella Agar plat you picked a colony which is colourless with a black centre then you inoculated a Triple Sugar Iron Agar (TSIA) medium. Assuming that the bacterium can ferment sucrose, so after 24 hours incubation the TSIA should read:
A. Red slant/Black butt
B. Yellow slant/Black butt
C. Yellow slant/Yellow butt
D. Yellow slant/Yellow butt +cracks
E. The correct answer is not listed
Answer: B. Yellow slant/Black butt
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