If Microbes Are Not Capable of Growth as Pure Isolated

question 50

Multiple Choice

If microbes are not capable of growth as pure isolated cultures,which factor do you consider the most likely to contribute to the growth challenge?

• A)Unculturable microbes may receive essential nutrients as a result of the metabolic activity of another member of a mixed microbial community
• B)Nutrients not yet identified by bioscientists may be lacking from a defined growth medium
• C)Gene transfer from other microbes may be required for active growth
• D)RNA transfer from other microbes may be required for active growth
• E)Protein transfer from other microbes may be required for active growth

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Definitions:

Nondirectional

Refers to hypotheses or predictions that do not specify a predicted direction of the relationship between variables.

One-Tailed T Test

A variation of the t-test that is used when a hypothesis predicts the direction of a potential difference between group means; it assesses whether this predicted difference is statistically significant in one specific direction.

Correlations

A statistical measure that expresses the extent to which two variables change together.

Groups

Collections of subjects, items, or observations often categorized based on specific characteristics for analysis.