The genus *Chromatium* is the most well studied member of purple sulfur bacteria and has been used as a model for photosynthesis. They are anaerobes that live in water and need sulfites to survive.

University of Wisconsin - Madison

This type of purple bacteria can oxidize hydrogen sulfide (H<sub>2</sub>S).

Purple Sulfur Bacteria *Chromatium*

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Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

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