Exam 16: Diversity of Bacteria

Staphylococcus aureus is known to cause all of the following diseases EXCEPT

Some species in the genus Acidobacteria are classified in Bacteria while others are considered Archaea.

Due to the slow and varied growth rates, mycobacteria are commonly grouped into either slow growing or very slow growing, which has consequences on the growth medium selected for culturing.

Cytophaga columnaris causes columnaris (or ʺcottonmouthʺ) disease in fish such as salmon. Based on its taxonomic group, predict some of the activities this bacterium has during infection of fish. Also mention one related taxon that likely has some of the same functions and another taxon that does not.

Even to a well-trained microbiologist, isolates of Streptomyces when grown on a nutrient agar plate can appear as though they are fungi. Describe key similarities of how these two unrelated groups can so easily be mistaken for each other, and then propose methods to conclusively distinguish between them.

The hypothesis that H₂ was a key electron donor for energy metabolism in primitive organisms is supported by it being such a common trophic strategy in Aquificae.

Due to the genetic similarities of non-pathogenic and pathogenic enterics, phenotypic assays are often performed in favor over taxonomy-based sequencing/probing to distinguish pathogens from non-pathogens.

Which of the following is LEAST commonly associated with endospore-forming bacteria?

The most metabolically diverse phylum of Bacteria known to date is the Proteobacteria.

Chlamydiae are most commonly transmitted throughout environments by insects.

To subgroup the lactic acid bacteria, which are incapable of aerobic degradation and only do fermentation, identifying products formed is a useful way to distinguish homofermentative versus heterofermentative lactic acid bacteria.

A gram-negative, obligately aerobic, bacillus-shaped bacterium that can degrade a large variety or aromatic compounds (making them potentially useful for bioremediation) is likely a(n)

Betaproteobacteria is a functionally diverse group that primarily uses anaerobic metabolisms.

Which of the following is NOT true of Epsilonproteobacteria?

Which of the following is NOT a member of the Deltaproteobacteria?

Which structural feature is common in BOTH Planctomycetes and Verrucomicrobia but RARELY found in bacteria outside these two phyla?

The ________ produce over 500 characterized antibiotics.

Which group of bacteria is most famous for their diversity of antibiotics produced? What could be an ecological role of antibiotic production by bacteria when the antibiotics are not produced at a sufficiently high level to be lethal?

Many gammaproteobacteria members are obligate intracellular symbionts of eukaryotes, which also enables many to become human pathogens.

While not all members of ________ are pathogenic, two medically relevant species cause meningitis and gonorrhea in humans.