How Can Streptococcus Pyogenes Initially Be Differentiated from Other Streptococcus Species

question 23

Multiple Choice

How can Streptococcus pyogenes initially be differentiated from other Streptococcus species that form part of the throat normal microbiotia?

• A) By Gram staining-it is a Gram-positive organism.
• B) By culturing the bacteria on nutrient agar and checking for hemolysis.
• C) By morphology-the bacteria are spherical and grow in long chains.
• D) By detection of the "A" carbohydrate in its cell wall using antibodies.
• E) By specific disease signs and symptoms, including sore throat and fever.

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Definitions:

Marginal Product

The additional output that is produced by adding one more unit of a particular input, keeping other inputs constant.

Short-Run Curve

Refers to a period in economics during which at least one factor of production is fixed, affecting production and cost decisions.

Marginal Product

The change in output resulting from employing one more unit of a particular input while holding all other inputs constant.

Total Product

The total quantity of output produced by a firm for a given quantity of inputs.