A Microbiologist Inoculates Staphylococcus Epidermidis and Escherichia Coli into a Culture

question 71

Multiple Choice

A microbiologist inoculates Staphylococcus epidermidis and Escherichia coli into a culture medium. Following incubation, only the E. coli grows in the culture. What is the most likely explanation?

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

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