A Gram-Negative Diplococcus Grew on 5% Sheep Blood Agar and Chocolate

question 12

Multiple Choice

A gram-negative diplococcus grew on 5% sheep blood agar and chocolate agar,had scant growth on MacConkey agar,and had no growth on modified Thayer-Martin (MTM) agar.The organism was identified as N.sicca.Which one of the following statements explains the discrepancy of the results obtained on the MTM agar?

• A)The medium was most likely expired.
• B)The organism was most likely incorrectly transported.
• C)The organism was most likely incubated at 35°C instead of 25°C.
• D)No discrepancy is present.N.sicca does not grow on MTM agar.

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