Microbiology Dynamic Study Module 11 Group 1 (Ch 11 Section 11.2)

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Which of the following statements is NOT true for Pelagibacter?

Pelagibacter's photosynthetic capability makes it a key producer in marine ecosystems.

Borrelia, the causative agent of Lyme disease, is a spirochete similar to the causative agent of syphilis, Treponema. Both bacteria

Have axial filaments

Which of the following bacteria does NOT belong with the others?

Helicobacter

Which of the following is an example of a helical bacterium that does NOT make a complete twist?

Helicobacter

Which member of the gammaproteobacteria is a potential cause of pneumonia and can be found in warm-water supply lines and air conditioning cooling towers?

Legionella

Which of the following bacteria does NOT belong with the others?

Vibrio

Rickettsias are different from most other bacteria in that they

are obligate intracellular parasites

A new microorganism has been discovered that resides in the mouths of dogs. This microorganism lacks a nucleus, has a cell wall consisting of peptidoglycan and an outer membrane of lipopolysaccharide, is shaped like a corkscrew, and is motile by means of an axial filament. This organism is most likely related to

spirochaetes

All of the following can form filaments EXCEPT

Borrelia

Which of these bacteria does NOT belong with the others?

Cyanobacteria

Which answer is NOT true of bacterial photosynthesis and/or photosynthetic bacteria?

Cyanobacteria deposit sulfur derived from the splitting of hydrogen sulfide outside of the cells

Which group of bacteria is known for containing organisms that are predators on other bacteria?

Deltaproteobacteria

Which of these bacteria is NOT associated with foodborne illness?

Erwinia

Enteric bacteria would most likely be found in which environment?

Intestinal tract of an animal

Why is Burkholderia a frequent cause of nosocomial infections?

It grows on unusual carbon sources and some antiseptics.

Which of the following bacteria does NOT fix nitrogen?

Nitrobacter

Azospirillum, Azotobacter, and Azomonas share which of the following?

Nitrogen-fixing ability

Which disease is caused by a bacterium that does NOT have peptidoglycan in its cell wall?

Nongonococcal urethritis

Erwinia bacteria produce an enzyme that breaks down pectin. You would expect Erwinia to cause diseases in which type of organism?

Plants

A bacterium isolated from the soil has the following characteristics: it is a gram-negative straight rod, it is aerobic and motile, it produces water-soluble pigment, and it readily grows on several common laboratory media. Ribosomal RNA analysis places this bacterium with the gammaproteobacteria. This organism is most likely in the genus

Pseudomonas

Which organism is NOT correctly matched to its motility?

Spirillum; axial filaments

Which of the following statements concerning Pseudomonas is true?

The bacteria can metabolize a wide variety of substrates.

Which of the following statements is NOT true of the genus Mycoplasma?

They are obligate intracellular pathogens.

Why are cyanobacteria classified as bacteria, rather than algae?

They are prokaryotic cells.

Enterics are

gram-negative facultative anaerobes that are found in the intestines of animals


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