Microbio 210 Chap 11

All of the following bacteria are gram-positive. Which does NOT belong with the others? A) Actinomyces B) Mycobacterium C) Listeria D) Corynebacterium E) Bacillus

Caulobacter are different from most bacteria in that they A) have stalks. B) are gram-positive. C) are gram-negative. D) are motile. E) lack cell walls.

Which of the following is the best reason to classify Streptococcus in the Lactobacillales? A) found in dairy products B) Gram reaction C) rRNA sequences D) fermentation of lactose E) morphology

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 is A) gram-positive. B) a photoheterotroph. C) using anaerobic respiration. D) a photoautotroph. E) a chemoautotroph.

Which of the following statements about the causative agent of Rocky Mountain spotted fever is FALSE? A) It is transmitted by ticks. B) It is an intracellular parasite. C) It is gram-negative. D) It is in the genus Rickettsia. E) It is found in soil and water.

Both Beggiatoa and the purple sulfur bacteria use H2S. These bacteria differ in that Beggiatoa A) uses H2S for a carbon source. B) belongs to the gammaproteobacteria. C) uses H2S for an energy source. D) uses light energy. E) is a heterotroph.

Escherichia coli belongs to the A) spirochetes. B) actinomycetes. C) green sulfur bacteria. D) gram-positive bacteria. E) proteobacteria.

The nonsulfur photosynthetic bacteria use organic compounds as A) carbon sources. B) electron donors to reduce CO2. C) oxygen sources. D) energy sources. E) electron acceptors.

Salmonella, Shigella, Yersinia, and Serratia are all A) gram-negative facultatively anaerobic rods. B) endospore-forming bacteria. C) pathogens. D) fermentative. E) gram-positive aerobic cocci.

Which of the following is NOT an enteric? A) Shigella B) Escherichia C) Enterobacter D) Salmonella E) Campylobacter

You have isolated a prokaryotic cell. The first step in identification is a(n) A) Gram stain. B) DNA fingerprint. C) endospore stain. D) flagella stain. E) lactose fermentation test.

Which one of the following bacteria does NOT belong with the others? A) Escherichia B) Bacillus C) Lactobacillus D) Streptococcus E) Staphylococcus

The crab industry needs female crabs for growing more crabs. What bacterium might be used to ensure development of female crabs and shrimp? A) Neisseria B) Acinetobacter C) Gemmata D) Wolbachia E) Pelagibacter

A primary difference between cyanobacteria and purple and green phototrophic bacteria is A) electron donor for CO2 reduction. B) color. C) energy source. D) cell type. E) cell wall type.

All of the following bacteria are motile. Which does NOT have flagella? A) Salmonella B) Pseudomonas C) spirochetes D) Escherichia E) helical bacteria

Which of the following bacteria are responsible for more infections and more different kinds of infections? A) Streptococcus B) Neisseria C) Salmonella D) Pseudomonas E) Staphylococcus

You have isolated a bacterium that grows in a medium containing only inorganic nutrients. Ammonia is oxidized to a nitrate ion. This bacterium is A) gram-negative. B) a photoheterotroph. C) a photoautotroph D) using anaerobic respiration. E) a chemoautotroph.

Mycoplasmas differ from other bacteria in that they A) are gram-negative. B) are acid-fast. C) lack a cell wall. D) are motile. E) grow inside host cells.

Burkholderia was reclassified from the gammaproteobacteria to the betaproteobacteria because A) it causes melioidosis. B) it grows in disinfectants. C) it is a gram-negative rod. D) its rRNA sequence is similar to that of Neisseria. E) it causes infections in cystic fibrosis patients.

Which one of the following bacteria does NOT belong with the others? A) Campylobacter B) Pseudomonas C) Salmonella D) Bordetella E) Burkholderia

Thiobacillus oxidizes inorganic sulfur compounds and reduces CO2. This bacterium is a A) photoautotroph. B) chemoautotroph. C) gammaproteobacteria. D) chemoheterotroph. E) photoheterotroph.

Which of the following genera is an anaerobic gram-negative rod? A) Bacteroides B) Treponema C) Neisseria D) Staphylococcus E) Escherichia

Which of the following are found primarily in the intestines of humans? A) endospore-forming rods B) facultatively anaerobic gram-negative rods C) gram-negative aerobic rods and cocci D) aerobic, helical bacteria E) gram-positive cocci

Which of the following bacteria does NOT belong with the others? A) Staphylococcus B) Halobacterium C) Methanobacterium D) Halococcus E) Sulfolobus

Figure 11.1 What is group "c." in the key shown in Figure 11.1? A) fusobacteria B) chlamydiae C) planctomycetes D) bacteroidetes E) spirochaetes

Which of the following is NOT a characteristic of Neisseria? A) gram-negative B) oxidase-positive C) requires X and V factors D) cocci E) Some species are human pathogens.

Which of the following pairs is mismatched? A) mycobacteria acid-fast B) Pseudomonas gram-positive C) aerobic, helical bacteria gram-negative D) spirochete axial filament E) enterics gram-negative

You have isolated an aerobic gram-positive, endospore-forming bacterium that grows well on 28) nutrient agar. To which of the following groups does it most likely belong? A) bacillales B) deltaproteobacteria C) phototrophic bacteria D) gammaproteobacteria E) The answer cannot be determined based on the information provided.

Which of the following form conidiospores? A) spiral and curved bacteria B) anaerobic gram-negative cocci C) endospore-forming gram-positive rods and cocci D) actinomycetes and related organisms E) rickettsias

Which of the following is NOT a characteristic of spirochetes? A) helical shape B) gram-negative C) found in the human oral cavity D) possess an axial filament E) easily observed with brightfield microscopy

You have isolated a gram-positive rod. What should you do next? A) endospore stain B) lactose fermentation C) enterotube D) flagella stain E) Gram stain

Which of the following pairs is mismatched? 32) A) actinomycetes reproduce by fragmentation B) archaea extremophiles C) chemoautotrophic bacteria fix atmospheric nitrogen D) Cytophaga a gliding, nonfruiting bacterium E) dissimilatory sulfate-reducing bacteria produce H2S

Which of the following lacks a cell wall? A) Clostridium B) Mycobacterium C) Nocardia D) Borrelia E) Mycoplasma

Streptomyces differs from Actinomyces because Streptomyces A) is a bacterium. B) produces conidia. C) forms filaments. D) makes antibiotics. E) is a strict aerobe.

Which of the following do you expect to be MOST resistant to high temperatures? A) Bacillus subtilis B) Streptococcocus pyogenes C) Neisseria gonorrhoeae D) Staphylococcus aureus E) Eschericia coli

Borrelia is classified as a spirochete because it A) possesses an axial filament. B) is transmitted by ticks. C) is aerobic. D) is a pathogen. E) is a rod.

Which one of the following does NOT belong with the others? A) Wolbachia B) Rickettsia C) Staphylococcus D) Coxiella E) Ehrlichia

Which of the following bacteria is gram-positive? A) Pseudomonas B) Bacteroides C) Salmonella D) Rickettsia E) Streptococcus

Which of the following bacteria is gram-negative? A) Staphylococcus B) Corynebacterium C) Bacillus D) Treponema E) Mycobacterium

Which of the following is NOT a characteristic inherent of the non-endospore-forming gram-positive rods? A) carry out fermentative metabolism B) lack cell walls C) nonpathogenic D) are aerotolerant E) display a branched filamentous morphology

Actinomycetes differ from fungi in that actinomycetes A) are chemoheterotrophs. B) cause disease. C) lack a membrane-bounded nucleus. D) are decomposers. E) require light.

Rickettsias differ from chlamydias in that rickettsias A) form elementary bodies. B) are enterics. C) are gram-negative. D) require an arthropod for transmission. E) are intracellular parasites.

Requirements for X and V factors are used to identify A) Haemophilus. B) Pseudomonas. C) Staphylococcus. D) Escherichia. E) Neisseria.

Which of the following pairs is NOT correctly matched? A) elementary body Escherichia B) heterocyst cyanobacteria C) myxospore gliding bacteria D) endospore Clostridium E) endospore Bacillus

Staphylococcus and Streptococcus can be easily differentiated in a laboratory by which one of the following? A) Gram stain reaction B) cell shape C) ability to cause disease D) glucose fermentation E) growth in high salt concentrations

T or F Questions 46) The human body is typically free of archaeal species. 47) The deinococci can be categorized as extremophiles. 48) The Gram stain is not suitable for identifying members of the Archaea. 49) The majority of bacterial species on Earth have not been successfully cultivated. 50) Currently, no members of Archaea have been linked to human disease. 51) All gram-negative bacteria are classified as proteobacteria. 52) Two distinguishing factors of the epsilonproteobacteria that they are motile and microaerophilic. 53) Photosynthetic organisms always produce oxygen gas as a metabolic byproduct. 54) Myxobacteria are classified as actinobacteria due to fungal-like lifestyle. 55) Bacterial predators such as Bdellovibrio are members of the betaproteobacteria.