Refer to the Figure, Which Shows the Light Absorption of a Green

question 147

Multiple Choice

Refer to the figure, which shows the light absorption of a green alga and purple sulfur bacteria. What can be concluded from these spectroscopy data?

• A) Purple sulfur bacteria use nitrogen as an electron acceptor.
• B) Purple sulfur bacteria are able to grow under layers of the green alga.
• C) The algae are entirely dependent on purple sulfur bacteria.
• D) Bacteria do not contain bacteriochlorophyll.
• E) Purple sulfur bacteria photosynthesize only in cloudy weather.

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Definitions:

Statistically Significant

A determination that a result from data analysis is unlikely to have occurred by chance, suggesting a real effect or difference is present.

Standard Deviations

A measure of the dispersion or variability within a set of numerical data, indicating how much variation there is from the average (mean).

Sample Averages

The mean value calculated from a sample set of data, representing the central tendency or typical value of that sample.

Mode

Mode refers to the most frequently occurring value in a set of data.