The genus *Rhodospirillum* is a group of purple nonsulfur bacteria that are facultative anaerobes and appear pink rather than purple. They can fix nitrogen and have potential applications in biotechnology for producing biological plastics and hydrogen fuel.

University of Wisconsin - Madison

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Purple nonsulfur bacteria are phototrophic bacteria that are similar to purple sulfur bacteria but use hydrogen instead of hydrogen sulfide for oxidation, utilizing organic substrates like succinate and malate as electron donors.

Purple non-sulfur bacteria

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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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