A Microbiologist Is Reading a Vaginal Culture on the Bench $\beta$

question 15

Multiple Choice

A microbiologist is reading a vaginal culture on the bench. There is growth on the SBA and chocolate (CHOC) plates, but no growth on the MacConkey (MAC) plate. The colonies growing on the SBA have produced a narrow, diffuse zone of $\beta$ -hemolysis around and under the colonies. What organism could this be?

• A) Escherichia coli
• B) Streptococcus agalactiae
• C) Streptococcus pyogenes
• D) Streptococcus pneumoniae

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Definitions:

Marginal Product

The increase in output that is produced by adding one more unit of a particular input while holding all other inputs constant.

Total Output

The complete amount of goods or services produced by an economy, sector, or organization over a certain period.

Least Skilled Worker

An employee who possesses the minimal skills required for a job, often receiving the lowest wages.

MP

Represents marginal productivity, which is the additional output derived from the use of one more unit of a variable input, holding all other inputs constant.