OpenStax Microbiology Test Bank Chapter 4: Prokaryotic Diversity

OpenStax Microbiology Test Bank Chapter 4: Prokaryotic Diversity * = Correct answer Multiple Choice 1. Which is the best example of a population? A. all the microbes living in a particular area B. all the microbes of a particular domain living in a particular area C. all the microbes of a single species living in a particular area* D. all the microbes living within the same host Difficulty: Moderate ASM Standard: 20 2. Microbial ecology is defined as the study of which of the following? A. competitive interactions between microbes B. cooperative interactions between microbes C. interactions between individuals of a single species D. interactions between microbial populations and their environment* Difficulty: Easy ASM Standard: 20 3. Which term best describes the relationship between pathogenic bacteria and humans? A. amensalism B. commensalism C. parasitism* D. predation Difficulty: Moderate ASM Standard: 23 4. Which of the following is not a class within the phylum Proteobacteria? A. Alphaproteobacteria B. Betaproteobacteria C. Deltaproteobacteria D. Omegaproteobacteria* Difficulty: Easy ASM Standard: N/A 5. Which of the following correctly characterizes Epsilonproteobacteria? A. They are atypical (not gram positive or gram negative). B. They are gram negative.* C. They are gram positive. D. They are gram variable. Difficulty: Easy ASM Standard: 34 6. Which describes bacteria that require low concentrations of oxygen to survive (less than that in the current atmosphere)? A. facultative anaerobes B. microaerophiles* C. obligate aerobes D. obligate anaerobes Difficulty: Easy ASM Standard: 11, 22 7. Cyanobacteria produce which of the following? A. hydrogen sulfide gas B. large quantities of ammonia C. oxygen* D. sulfuric acid Difficulty: Easy ASM Standard: 11, 22 8. Which of the following bacterial groups is thought to be most closely related to the last universal common ancestor? A. Alphaproteobacteria B. cyanobacteria C. deeply branching bacteria* D. green filamentous bacteria Difficulty: Easy ASM Standard: 5 9. Which of the following is a phylum in Domain Archaea? A. Crenarchaeotae* B. Deinococcus C. Mycoplasma D. Thermotogae Difficulty: Easy ASM Standard: 5 10. Which genus contains the nitrogen-fixing