Cultures can be placed in a solution of 3% hydrogen peroxide (H2O2) to determine if they contain catalase positive species such as staphylococci, which are facultative anaerobes, or catalase negative species such as streptococci, which are aerotolerant and do not contain the catalase enzyme.

Catalase is an enzyme that converts hydrogen peroxide (H2O2) to water and oxygen

Catalase

https://openstax.org/details/books/microbiology/

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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