1 answer

What results would you get when testing these organisms (Klebsiella pneumoniae, Escherichia coli, Staphylococcus saprophyticus, Proteus...

Question:

what results would you get when testing these organisms (Klebsiella pneumoniae, Escherichia coli, Staphylococcus saprophyticus, Proteus mirabilis, Proteus vulgaris, Providencia stuarti, Pseudomonas aeruginosa, Enterobacter aerogenes, Morganella morganii)

Tests being run:
MacConkey agar test, a Gram staining test, SIM agar and Urea agar

(just indicate if results are negative or positive)


Answers

Klebsiella pneumoniae - MacConkey agar positive (lactose fermenter), gram negative, SIM agar negative (non motile), urea agar positive.

Escherichia coli - MacConkey agar positive, gram negative, SIM agar (hydrogen sulfide negative, indole positive, motile), urea agar negative.

Staphylococcus saprophyticus - MacConkey agar positive, gram positive, SIM agar (hydrogen sulfide positive, non-motile), urea agar positive.

Proteus mirabilis - MacConkey agar negative (colourless colony), gram negative, SIM agar (hydrogen sulfide positive, indole negative, motile), urea agar positive.

Proteus vulgaris - MacConkey agar negative, gram negative, SIM agar (hydrogen sulfide positive, indole positive, motile), urea agar positive.

Providencia stuartii - MacConkey agar negative, gram negative, SIM agar (hydrogen sulfide negative, indole positive, motile), urea agar negative.

Pseudomonas aeruginosa - MacConkey agar negative, gram negative, SIM agar (hydrogen sulfide negative, indole negative, motile), urea agar negative.

Enterobacter aerogenes - MacConkey agar positive, gram negative, SIM agar (hydrogen sulfide negative, indole negative, motile), urea agar negative.

Morganella morganii - MacConkey agar negative, gram negative, SIM agar (hydrogen sulfide negative, indole positive, motile), urea agar positive.

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