A Microbiologist Inoculates Staphylococcus Aureus into a Culture Medium

question 9

Multiple Choice

A microbiologist inoculates Staphylococcus aureus into a culture medium.Following incubation, both Staphylococcus aureus and Staphylococcus epidermidis are determined to be growing in this culture.What is the most likely explanation?

• A)The microbiologist used too much inoculum.
• B)The culture is contaminated.
• C)The incubation temperature was incorrect.
• D)The culture medium must be selective.
• E)The culture medium must be differential.

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