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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Definitions:

Directional Terminology

A set of terms used to describe the relative locations of parts of the body in relation to each other.

Caudal

Pertaining to the tail or posterior part of the body, often used to describe direction in anatomy.

Proximal

Situated nearer to the center of the body or the point of attachment.

Inguinal Region

The area of the lower abdomen, located just above the groin, where the thighs meet the torso.