Which of the Following Species Was Once Considered So Benign

question 46

Multiple Choice

Which of the following species was once considered so benign that microbiologists used it to trace movements of air currents in hospitals and over cities?

• A)Morganella
• B)Providencia
• C)Citrobacter
• D)Serratia
• E)Legionella

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Definitions:

Scrap Value

The estimated resale value of an asset at the end of its useful life, often considered in depreciation calculations.

Coin Toss

A random method of deciding between two alternatives by flipping a coin and observing which side lands facing up.

Expected Value

A calculated average of all possible values of a random variable, weighted by their probabilities.

Coin Toss

A random method used to determine a decision, consisting of throwing a coin into the air and checking which side is facing up when it lands.