A Primary Difference Between Cyanobacteria and Purple and Green Phototrophic

question 25

Multiple Choice

A primary difference between cyanobacteria and purple and green phototrophic bacteria is

• A) Energy source.
• B) Color.
• C) Cell wall type.
• D) Electron donor for CO₂ reduction.
• E) Cell type.

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Definitions:

Frequencies

The rate at which a repeated event occurs, often used in the context of how often different values appear in a dataset.

Stacked Bar Chart

A graphical representation of data where bars divided into sub-parts represent the whole and its segments.

Relative Frequency

The proportion of times a value occurs in relation to the total number of outcomes, often expressed as a percentage.

Categorical Variables

Variables that represent types or categories, where the data can be divided into groups with no inherent numerical ordering.