Q 1. Various species of Streptomyces are important sources of antibiotics. 2. The anaerobic Clostridium species are troublesome pathogens largely because of their capacity for 3. Which of the following bacterial genera plays an important role in environmental nitrogen cycles? 4. Mycoplasmas are named for the large quantities of mycolic acid in their cell walls. 5. What does the term "deeply branching bacteria" mean?

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