Exam 16: Diversity of Bacteria

A pseudomonad that loses its R plasmid in the soil is LEAST likely to

Snapping division is a hallmark trait of ________ which can be visualized under a microscope by ________.

Antibiotics that disrupt or halt cell wall biosynthesis are actually ineffective at harming growth of mycoplasmas.

Deinococcus radiodurans is capable of withstanding especially high levels of radiation, and the carotenoids they produce enhance this resistance.

Rhodobacter and Roseobacter are two genera with a common ancestor in Alphaproteobacteria.

Thermotoga species are hyperthermophiles and appear relatively closely related to Archaea in comparison to other bacteria such as Salmonella.

Which genus would you most likely find in the photic layer of the oceans due to its abundance and aerobic chemoorganotrophic phenotype?

Campylobacter and Helicobacter are two genera within the ________ class of Proteobacteria.

The enteric bacteria are a group classified within Proteobacteria that cause disease in animals.

The order Lactobacillales within Firmicutes are also called the lactic acid bacteria, because these bacteria

A yogurt, which had ʺcontains live culturesʺ on its label, was transferred onto an acidic carbohydrate-containing medium for selective enrichment. Eventually, isolates of the ________ genus were obtained.

Which characteristic is NOT associated with Vibrio spp.?

A soil sample was diluted into a nutrient broth, then spread onto a plate and grown for one week at room temperature. Several colonies appeared dusty or fuzzy and yet were identified as bacteria-not as fungi. Which genus do these isolates likely belong in?

Which species does NOT produce endospores?

Agrobacterium tumefaciens can form root nodules in plants and can mate with bacteria, which makes it an excellent host organism for genetic transformations among different domains of life.

Chemolithotrophic ammonia-oxidization is a metabolic requirement for members of

Which genus is most easily distinguishable from others below by occurring in cell clusters of 8 or more?

Despite ether-linked lipids being a hallmark of the Archaea, the thermophilic sulfate-reducing bacteria in ________ also contain ether-linked lipids, which suggests they may be more closely related to Archaea than many other groups in Bacteria.

A gram-negative, nonsporulating rod that is highly motile, oxidase negative, facultatively aerobic, ferments glucose, and urease-positive is likely to be of which genus?

Treating wastewater requires the removal of organic material, and an ideal phenotype of a bacterium to do this would flocculate to make the cells settle (rather than staying in suspension) in a wastewater stream. Which species would be best for this application?