In Your Microbiology Lab, Your Class Is Identifying Bacteria

question 59

Multiple Choice

In your microbiology lab, your class is identifying bacteria. You are using dichotomous keys to aid in the identi?cation process using the data from a variety of biochemical tests. What problems do you foresee in this procedure?

• A) Dichotomous keys are too sophisticated to read properly, so you are worried that there will be a large degree of error in your identi?cation.
• B) Dichotomous keys are not valid for identi?cation.
• C) If you misread a biochemical test or write down the wrong result, the key will likely take you to an alternative organism that is not your unknown bacterium.
• D) The dichotomous key does not contain information on your bacterium.

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Definitions:

Propositional Tags

Linguistic devices that frame statements to indicate the speaker's attitude or the truth value of the statement.

Ambiguity

The quality of being open to more than one interpretation; inexactness or uncertainty in language or meaning.

Semantic Level

Pertaining to the meaning of words and language, especially the relationship between signifiers and what they signify or represent.

Case Markers

Grammatical markers that indicate the role of a noun, pronoun, or adjective in a sentence, such as subject, object, or possessive.