Which of the Following Groups of Bacteria Lives in Environments

question 33

Multiple Choice

Which of the following groups of bacteria lives in environments similar to those that may have existed on the early Earth?

• A) deeply branching bacteria
• B) cyanobacteria
• C) mycoplasmas
• D) thermophiles
• E) proteobacteria

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Definitions:

z

A statistical measure that represents the number of standard deviations an element is from the mean of its population.

Standard Normal Random Variable

A variable that follows a normal distribution with a mean of 0 and a standard deviation of 1.

Area

In mathematics, Area refers to the measure of the extent of a two-dimensional surface or shape, expressed in square units.

z

A standard score indicating how many standard deviations an element is from the mean in a normal distribution.