What Genus Has the Following Characteristics: Negative for Urea, Positive

question 6

Multiple Choice

What genus has the following characteristics: negative for urea, positive for lysine decarboxylase, positive for hydrogen sulfide, positive for indole, and does not grow on Simmon's citrate?

• A)Providencia
• B)Edwardsiella
• C)Escherichia
• D)Morganella

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Definitions:

Extraneous Variable

Any variable that is not intentionally studied in the experiment, which can affect the outcome and potentially confound the results if not controlled.

Dependent Variable

The variable being tested and measured in a scientific experiment, expected to change as a result of alterations in the independent variable.

Plant Growth

The process by which plants increase in size and mass through both cell growth and cell division, influenced by environmental factors and genetic makeup.

Dependent Variable

The variable in an experiment that is measured and expected to change as a result of manipulations to the independent variable.