Ch 11 Micro

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XQWCat
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184581
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Ch 11 Micro
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2012-12-07 13:18:42
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Microbiology
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Microbiology Ch 11
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  1. Which of the following are found primarily in the intestines of humans?A) Gram-negative aerobic rods and cocciB) Aerobic, helical bacteriaC) Facultatively anaerobic gram-negative rodsD) Gram-positive cocciE) Endospore-forming rods
    C
  2. Which of the following is NOT a characteristic of the non-endospore-forming gram-positive rods?A) Are aerotolerantB) Carry out fermentative metabolismC) Don't produce endosporesD) Are nonpathogenicE) Lack cell walls
    D
  3. Which of the following is NOT a characteristic of Neisseria?A) Requires X and V factorsB) CocciC) Gram-negativeD) Oxidase-positiveE) Some species are human pathogens.
    A
  4. Staphylococcus and Streptococcus can be easily differentiated in a laboratory by which one of the following?A) Cell shapeB) Gram stain reactionC) Growth in high salt concentrationsD) Ability to cause diseaseE) Glucose fermentation
    C
  5. Which of the following genera is an anaerobic gram-negative rod?A) EscherichiaB) StaphylococcusC) BacteroidesD) TreponemaE) Neisseria
    C
  6. Which of the following do you expect to be most resistant to high temperatures?A) Bacillus subtilisB) Eschericia coliC) Neisseria gonorrhoeaeD) Staphylococcus aureusE) Streptococcocus pyogenes
    A
  7. Which of the following is NOT an enteric?A) SalmonellaB) ShigellaC) EscherichiaD) EnterobacterE) Campylobacter
    E
  8. Which of the following is NOT a characteristic of spirochetes?A) Possess an axial filamentB) Gram-negativeC) Helical shapeD) Easily observed with brightfield microscopyE) Difficult to culture in vitro
    D
  9. You have isolated a bacterium that grows in a medium containing an organic substrate and nitrate in the absence of oxygen. The nitrate is reduced to nitrogen gas. You can be sure that this bacterium isA) Gram-positive.B) Using anaerobic respiration C) A chemoautotroph.D) A photoautotroph.E) A photoheterotroph.
    B
  10. Which of the following lacks a cell wall?A) BorreliaB) MycoplasmaC) MycobacteriumD) ClostridiumE) Nocardia
    B
  11. Which of the following bacteria is gram-negative?A) TreponemaB) CorynebacteriumC) BacillusD) StaphylococcusE) Mycobacterium
    A
  12. Which of the following form conidiospores?A) Endospore-forming gram-positive rods and cocciB) Actinomycetes and related organismsC) RickettsiasD) Anaerobic gram-negative cocciE) Spiral and curved bacteria
    B
  13. Which of the following pairs is mismatched?A) Dissimilatory sulfate-reducing bacteria – produce H2SB) Archaea – extremophilesC) Chemoautotrophic bacteria – fix atmospheric nitrogenD) Actinomycetes – reproduce by fragmentationE) Cytophaga – a gliding, nonfruiting bacterium
    C
  14. Rickettsias differ from chlamydias in that rickettsiasA) Are gram-negative.B) Are intracellular parasites.C) Require an arthropod for transmission.D) Form elementary bodies.E) Lack cell walls.
    C
  15. Requirements for X and V factors are used to identifyA) Staphylococcus.B) Escherichia.C) Neisseria. D) Haemophilus.E) Pseudomonas
    D
  16. You have isolated a bacterium that grows in a medium containing only inorganic nutrients. Ammonia is oxidized to nitrate ion. This bacterium isA) Gram-negative.B) Using anaerobic respiration.C) A chemoautotroph.D) A photoautotrophE) A photoheterotroph.
    C
  17. Which of the following bacteria is gram-positive?A) PseudomonasB) SalmonellaC) StreptococcusD) BacteroidesE) Rickettsia
    C
  18. Escherichia coli belongs to theA) Proteobacteria.B) Gram-positive bacteria.C) Green sulfur bacteria.D) Spirochetes.E) Actinomycetes.
    A
  19. Which one of the following bacteria does NOT belong with the others?A) BacillusB) EscherichiaC) LactobacillusD) StaphylococcusE) Streptococcus
    B
  20. Which of the following statements about the causative agent of Rocky Mountain spotted fever is false?A) It is an intracellular parasite.B) It is transmitted by ticks.C) It is in the genus Rickettsia.D) It is gram-negative.E) It is found in soil and water
    E
  21. A primary difference between cyanobacteria and purple and green phototrophic bacteria isA) Energy source.B) Cell wall type.C) Electron donor for CO2 reduction. D) Cell type.E) Color.
    C
  22. Which one of the following bacteria does NOT belong with the others?A) BordetellaB) BurkholderiaC) CampylobacterD) PseudomonasE) Salmonella
    E
  23. Which of the following bacteria are responsible for more infections and more different kinds of infections?A) StreptococcusB) StaphylococcusC) SalmonellaD) PseudomonasE) Neisseria
    A
  24. Both Beggiatoa and the purple sulfur bacteria use H2S. These bacteria differ in that BeggiatoaA) Uses H2S for an energy source.B) Uses H2S for a carbon source.C) Uses light energy.D) Belongs to the gammaproteobacteria.E) Is a heterotroph.
    A
  25. The nonsulfur photosynthetic bacteria use organic compounds asA) Carbon sources.B) Electron donors to reduce CO2.C) Energy sources.D) Electron acceptors.E) Oxygen sources.
    B
  26. Which of the following is the best reason to classify Streptococcus in the Lactobacillales?A) Gram reactionB) MorphologyC) Fermentation of lactoseD) rRNA sequencesE) Found in dairy products
    D
  27. Streptomyces differs from Actinomyces because StreptomycesA) Makes antibiotics.B) Produces conidia. C) Forms filaments.D) Is aerobic.E) Is a bacterium.
    D
  28. All of the following bacteria are gram-positive. Which does NOT belong with the others?A) ActinomycesB) BacillusC) CorynebacteriumD) ListeriaE) Mycobacterium
    E
  29. Salmonella, Shigella, Yersinia, and Serratia are allA) Pathogens.B) Gram-negative facultatively anaerobic rods.C) Gram-positive aerobic cocci.D) Fermentative.E) Endospore-forming bacteria.
    B
  30. You have isolated a gram-positive rod. What should you do next?A) Gram stainB) Lactose fermentationC) Endospore stainD) Flagella stainE) Enterotube
    C
  31. Borrelia is classified as a spirochete because itA) Is aerobic.B) Possesses an axial filament.C) Is a rod.D) Is a pathogen.E) Is transmitted by ticks.
    B
  32. Thiobacillus oxidizes inorganic sulfur compounds and reduces CO2. This bacterium is aA) Chemoheterotroph.B) Chemoautotroph.C) Photoautotroph.D) Gammaproteobacteria.E) Photoheterotroph.
    B
  33. You have isolated a prokaryotic cell. The first step in identification is a(n)A) Gram stain.B) Lactose fermentation test.C) Endospore stain.D) Flagella stain.E) DNA fingerprint.
    A
  34. Actinomycetes differ from fungi in that actinomycetesA) Are chemoheterotrophs.B) Lack a membrane-bounded nucleus.C) Require light.D) Are decomposers.E) Cause disease
    B
  35. You have isolated an aerobic gram-positive, endospore-forming bacterium that grows well on nutrient agar. To which of the following groups does it most likely belong?A) Phototrophic bacteriaB) GammaproteobacteriaC) DeltaproteobacteriaD) BacillalesE) Can't tell
    D
  36. Which of the following pairs is mismatched?A) Spirochete – axial filamentB) Aerobic, helical bacteria – gram-negativeC) Enterics – gram-negativeD) Mycobacteria – acid-fastE) Pseudomonas – gram-positive
    E
  37. Which one of the following does NOT belong with the others?A) CoxiellaB) EhrlichiaC) RickettsiaD) StaphylococcusE) Wolbachia
    D
  38. Caulobacter are different from most bacteria in thatA) They are gram-negative.B) They are gram-positive.C) They have stalks.D) They lack cell walls.E) They are motile.
    C
  39. All of the following bacteria are motile; which does (do) NOT have flagella?A) EscherichiaB) Helical bacteriaC) PseudomonasD) Spirochetes E) Salmonella
    D
  40. Which of the following bacteria does NOT belong with the others?A) HalobacteriumB) HalococcusC) MethanobacteriumD) StaphylococcusE) Sulfolobus
    D
  41. Mycoplasmas differ from other bacteria in that theyA) Grow inside host cells.B) Lack a cell wall.C) Are acid-fast.D) Are motile.E) Are gram-negative
    B
  42. Which of the following pairs is NOT correctly matched?A) Elementary body – EscherichiaB) Endospore – BacillusC) Endospore – ClostridiumD) Heterocyst – cyanobacteriaE) Myxospore – gliding bacteria
    A
  43. Burkholderia was reclassified from the gammaproteobacteria to the betaproteobacteria becauseA) It grows in disinfectants.B) It is a gram-negative rod.C) It causes infections in cystic fibrosis patients.D) It causes melioidosis.E) Its rRNA sequence is similar to that of Neisseria.
    E
  44. The crab industry needs female crabs for growing more crabs. What bacterium might be used to ensure development of female crabs and shrimp?A) AcinetobacterB) GemmataC) NeisseriaD) PelagibacterE) Wolbachia
    E

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