A Microbiologist Inoculates Staphylococcus Aureus into a Culture Medium

question 55

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

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