Question 1

Which of the following best describes the metabolic strategy of Pseudomonas aeruginosa, a member of the Gammaproteobacteria?

Accepted Answer

Chemoheterotrophic, metabolically diverse, and an opportunistic pathogen

Question 2

A patient presents with a rapidly progressing fever and a history of flea bites. Which genus is most likely responsible for the infection?

Accepted Answer

Yersinia

Question 3

Which of the following bacteria is responsible for converting ammonium ions to nitrite in the nitrogen cycle?

Accepted Answer

Nitrosomonas

Question 4

Which of the following statements about Chlamydia trachomatis is correct?

Accepted Answer

It forms an infective elementary body during its life cycle

Question 5

Which of the following is a distinguishing feature of Spirochaetes such as Treponema pallidum?

Accepted Answer

Movement via axial filaments resulting in corkscrew motility

Question 6

A laboratory is attempting to detect a bacterium that cannot be cultured. Which molecular technique would be most appropriate?

Accepted Answer

16S rRNA gene sequencing

Question 7

Which of the following bacteria is associated with the production of acetic acid from ethanol and is important in vinegar production?

Accepted Answer

Acetobacter

Question 8

Which of the following best explains why Pelagibacter is one of the most abundant microorganisms in the ocean?

Accepted Answer

It is extremely small and thrives in low-nutrient environments

Question 9

Which of the following bacteria is a common cause of nosocomial infections and produces a characteristic red pigment?

Accepted Answer

Serratia

Question 10

Which of the following is true regarding the Archaea domain?

Accepted Answer

They lack peptidoglycan in their cell walls

Question 11

A patient is diagnosed with peptic ulcers and stomach cancer. Which bacterium is most likely involved?

Accepted Answer

Helicobacter pylori

Question 12

Which of the following bacteria is known for its swarming motility and formation of concentric rings on agar plates?

Accepted Answer

Proteus mirabilis

Question 13

Which of the following is a plant pathogen that causes crown gall disease by inserting a plasmid into plant cells?

Accepted Answer

Agrobacterium

Question 14

Which of the following bacteria is responsible for causing whooping cough?

Accepted Answer

Bordetella pertussis

Question 15

Which of the following is a distinguishing feature of Gram-positive bacteria with high G+C content?

Accepted Answer

They include genera such as Streptomyces and Mycobacterium

Question 16

Which of the following bacteria is commonly used as an indicator of fecal contamination in water?

Accepted Answer

Escherichia coli

Question 17

Methanogens, a group within the Archaea, are characterized by which of the following?

Accepted Answer

Production of methane in anaerobic environments

Question 18

Which of the following bacteria is associated with the disease tularemia?

Accepted Answer

Francisella tularensis

Question 19

Which of the following best describes the role of Zoogloea in wastewater treatment?

Accepted Answer

It is important in the activity of the activated sludge system

Question 20

Which of the following bacteria is transmitted by ticks and causes ehrlichiosis?

Accepted Answer

Ehrlichia

Study Guide: The Prokaryotes – Domains Bacteria and Archaea (Chapter 11)

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