Quiz 22: The Proteobacteria
Biology
Q 1Q 1
Which of the following genera include bacteria with stalks?
A)Vibrio
B)Campylobacter
C)Caulobacter
D)Rhizobium
Free
Multiple Choice
C
Q 2Q 2
An appendage that is an extension of the bacterial cell wall and plasma membrane is a(n)______.
A)flagellum
B)prostheca
C)pilus
D)mycelium
Free
Multiple Choice
B
Q 3Q 3
An organism that uses methane or methanol as its sole carbon and energy source is called a ______.
A)methanogen
B)methylotroph
C)methanotroph
D)methylogen
Free
Multiple Choice
B
Q 4Q 4
Species of the genus Hyphomicrobium are budding bacteria that attach to solid objects and are ______.
A)found in marine and freshwater environments
B)aerobic chemoheterotrophs
C)able to reproduce by budding
D)All of the choices are correct.
Free
Multiple Choice
Q 5Q 5
Rickettsias are not ______.
A)able to use glucose as an energy source
B)the cause of Rocky Mountain Spotted Fever
C)obligate intracellular parasites
D)All of the choices are correct.
Free
Multiple Choice
Q 6Q 6
Members of the genus Rhizobium
A)infect broad-leaved plants and cause crown gall disease.
B)are free living soil bacteria that fix nitrogen.
C)grow symbiotically in root nodules of legumes where they fix nitrogen.
D)are important nitrifying bacteria that convert nitrite to nitrate.
Free
Multiple Choice
Q 7Q 7
The process of conversion of ammonia to nitrate is referred to as _______.
A)nitrogen fixation
B)nitrification
C)ammonification
D)denitrification
Free
Multiple Choice
Q 8Q 8
Most of the oligotrophic proteobacteria are found in the _______.
A)alpha proteobacteria
B)beta proteobacteria
C)gamma proteobacteria
D)delta proteobacteria
Free
Multiple Choice
Q 9Q 9
Which of the following best describes the photosynthetic membranes of the purple nonsulfur bacteria?
A)The photosynthetic membranes are attached to the plasma membrane but not continuous with it.
B)The photosynthetic membranes are not associated with the plasma membrane.
C)The photosynthetic membranes are continuous with the plasma membrane.
D)There are no photosynthetic membranes in the purple nonsulfur bacteria.
Free
Multiple Choice
Q 10Q 10
Which of the following genera grow symbiotically within root nodules of legumes as nitrogen-fixing bacteroids?
A)Agrobacterium
B)Rhizobium
C)Nitrosomonas
D)Bacteroides
Free
Multiple Choice
Q 11Q 11
Which of the following is true of Agrobacterium tumefaciens?
A)It is capable of nitrogen fixation.
B)It causes crown gall disease when it carries a tumor inducing (Ti)plasmid.
C)It can enter plants through unbroken leaf tissue.
D)All of the choices are correct.
Free
Multiple Choice
Q 12Q 12
The class of proteobacteria that may be incorporated into the gamma proteobacteria is the ______.
A)alpha proteobacteria
B)beta proteobacteria
C)delta proteobacteria
D)epsilon proteobacteria
Free
Multiple Choice
Q 13Q 13
The purple nonsulfur bacteria
A)grow anaerobically as photoorganoheterotrophs.
B)utilize organic molecules as a source of electrons for photosynthesis.
C)typically can grow aerobically in the dark as chemoorganoheterotrophs.
D)All of the choices are correct.
Free
Multiple Choice
Q 14Q 14
Rickettsia species are unable to use glucose as a carbon and energy source,but can use glutamate or succinate.
Free
True False
Q 15Q 15
The stalk of Caulobacter increases in the surface area of the cell,which facilitates absorption of nutrients from nutrient poor environments.
Free
True False
Q 16Q 16
Although discussed with the bacteria,Rickettsias are small obligate intracellular parasites and are therefore more properly classified as viruses.
Free
True False
Q 17Q 17
Caulobacter is a genus of bacteria with a unique cell division cycle that yields two morphologically distinct cell types.
Free
True False
Free
Short Answer
Q 19Q 19
Members of the genus Rhizobium,when growing symbiotically within root nodule cells,are referred to as ______.
Free
Short Answer
Free
Short Answer
Q 21Q 21
Sheaths of the bacterium Sphaerotilus are tubelike structures that are in intimate contact with the chain of cells that they enclose.
Free
True False
Q 22Q 22
Species of the genus Thiobacillus
A)oxidize inorganic sulfur compounds and produce ATP.
B)produce acids that leach metals out of ore.
C)are ubiquitous in soil,freshwater,and marine environments.
D)All of the choices are correct.
Free
Multiple Choice
Q 23Q 23
Burkholderia cepacia and Pseudomonas aeruginosa can be a particular problem with ______.
A)pneumonia patients
B)decay of iron pipes under anaerobic conditions
C)myasthenia gravis patients
D)cystic fibrosis patients
Free
Multiple Choice
Q 24Q 24
Members of the genus Neisseria cause which of the following human diseases?
A)Gonorrhea
B)Syphilis
C)Genital herpes
D)Diarrhea gastroenteritis
Free
Multiple Choice
Q 25Q 25
Which of the following is/are true of the sheath of Leptothrix?
A)Attaches bacteria to surfaces
B)May contain ferric and manganic oxides
C)Helps protect against microbial predators
D)All of the choices are correct.
Free
Multiple Choice
Q 26Q 26
Whooping cough is caused by ______.
A)Klebsiella pneumoniae
B)Vibrio parahaemolyticus
C)Bordetella pertussis
D)Yersinia pestis
Free
Multiple Choice
Q 27Q 27
Coxiella burnetii is responsible for ______.
A)Q-fever
B)Rocky Mountain spotted fever
C)Lyme disease
D)Typhoid fever
Free
Multiple Choice
Q 28Q 28
Coxiella burnetii reproduces in the ______________ of a eukaryotic host cell.
A)cytoplasm
B)phagolysosome
C)nucleus
D)endoplasmic reticulum
Free
Multiple Choice
Q 29Q 29
Members of the genus Pseudomonas
A)are aerobes that mineralize a wide variety of organic compounds.
B)are obligate intracellular parasites.
C)form cysts when starved for nutrients.
D)perform anaerobic photosynthesis.
Free
Multiple Choice
Q 30Q 30
Mineralization refers to
A)the breakdown of organic materials to inorganic materials.
B)the release of various minerals from ores.
C)the utilization of minerals as energy sources.
D)the incorporation of inorganic material into organic materials.
Free
Multiple Choice
Q 31Q 31
Bacteria that naturally exhibit bioluminescence have been found in which of the following genera?
A)Vibrio
B)Shigella
C)Pasteurella
D)Pseudomonas
Free
Multiple Choice
Q 32Q 32
The largest group of proteobacteria are the ______.
A)alpha proteobacteria
B)beta proteobacteria
C)gamma proteobacteria
D)delta proteobacteria
Free
Multiple Choice
Q 33Q 33
Which of the following is not true about Methylococcus and Methylomonas?
A)They are strict anaerobes.
B)Most species are capable of forming cysts.
C)They contain complex arrays of intracellular membranes when using methane.
D)All of the choices are correct.
Free
Multiple Choice
Q 34Q 34
Which of the following genera fix nitrogen nonsymbiotically?
A)Rhizobium
B)Nitrosomonas
C)Nitrobacter
D)Azotobacter
Free
Multiple Choice
Q 35Q 35
Members of the genus Salmonella are common causes of ______.
A)gastroenteritis
B)pneumonia
C)meningitis
D)urinary tract infections
Free
Multiple Choice
Q 36Q 36
Which of the following organisms causes plague?
A)Bordetella pertussis
B)Yersinia pestis
C)Helicobacter pylori
D)Campylobacter jejuni
Free
Multiple Choice
Q 37Q 37
Beggiatoa are ______.
A)obligate aerobes
B)facultative anaerobes
C)microaerophiles
D)obligate anaerobes
Free
Multiple Choice
Q 38Q 38
The causative agent of cholera in humans is a member of the genus ______.
A)Escherichia
B)Vibrio
C)Enterobacter
D)Shigella
Free
Multiple Choice
Q 39Q 39
Methylotrophic bacteria
A)are strict anaerobes.
B)use reduced one-carbon compounds as their main source of carbon.
C)are members of the Archaea based on 16S rRNA sequencing.
D)produce methane as a by-product of their metabolism.
Free
Multiple Choice
Q 40Q 40
A genus in the family Enterobacteriaceae that is a major pathogen of crop plants is ______.
A)Yersinia
B)Erwinia
C)Proteus
D)Shigella
Free
Multiple Choice
Q 41Q 41
Methylotrophic bacteria generate ATP by oxidizing methane to methanol then to formaldehyde,which is excreted.
Free
True False
Free
True False
Q 43Q 43
The enterobacteria in the order Enterobacteriales are readily distinguishable from one another by morphological criteria.
Free
True False
Q 44Q 44
Because of the similarity in cellular morphology among the Enterobacteriales,biochemical or genetic tests are needed for identification of particular genera and species.
Free
True False
Free
True False
Q 46Q 46
Members of the genus Thiothrix are sheathed bacteria that can replicate by releasing gonidia from the open end of the sheath.
Free
True False
Free
True False
Free
True False
Q 49Q 49
Most myxobacteria
A)are micropredators because they secrete digestive enzymes that lyse bacteria and yeasts.
B)have the ability to aggregate and form a fruiting body under conditions of nutrient limitation.
C)produce desiccation resistant dormant myxospores.
D)All of the choices are correct.
Free
Multiple Choice
Q 50Q 50
The genus Bdellovibrio
A)form long filaments called trichomes.
B)prey on gram negative bacteria by becoming an intracellular parasite.
C)use reduced sulfur compounds as a source of energy.
D)are responsible for causing diarrhea in humans.
Free
Multiple Choice
Q 51Q 51
The genus Desulfovibrio
A)is a strict anaerobe.
B)uses sulfate as a terminal electron acceptor during anaerobic respiration.
C)produces H2S.
D)All of the choices are correct.
Free
Multiple Choice
Q 52Q 52
Myxobacteria lyse bacteria and yeasts by secretion of digestive enzymes.They then use the resulting peptides and amino acids as a source of which of the following?
A)Phosphate
B)Nitrogen
C)Iron
D)All of the choices are correct.
Free
Multiple Choice
Q 53Q 53
In which of the following regions in the host bacterium are you most likely to find Bdellovibrio?
A)The cytoplasm
B)The nucleoid
C)The space between the cell wall and plasma membrane
D)The cell nucleus
Free
Multiple Choice
Q 54Q 54
Members of the order Desulfovibrionales use which of the following as electron acceptors during anaerobic respiration?
A)Elemental sulfur or sulfate
B)O2
C)CO2
D)Organic acids and alcohols
Free
Multiple Choice
Q 55Q 55
Helicobacter pylori is responsible for ______.
A)pneumonia
B)cholera
C)dysentery
D)peptic ulcer disease
Free
Multiple Choice
Q 56Q 56
Campylobacter jejuni is the cause of ______.
A)abortion in sheep and enteritis diarrhea in humans
B)wilt disease in plants
C)fowl cholera
D)meningitis
Free
Multiple Choice
Q 57Q 57
Filamentous microbial mats in anoxic,sulfide-rich cave springs are dominated by members of the ______.
A)alpha proteobacteria
B)beta proteobacteria
C)delta proteobacteria
D)epsilon proteobacteria
Free
Multiple Choice
Free
Short Answer
Q 59Q 59
In the genus Caulobacter,asymmetric transverse fission produces a flagellated that adheres to surfaces.
Free
Short Answer
Q 60Q 60
An example of purple photosynthetic bacteria metabolic flexibility is seen in Rhodospirillum rubrum using a "decision-making" process; in oxic conditions,the bacterium uses fermentation,photoheterotrophy,or photoautotrophy versus when oxygen is not present that the photosynthetic apparatus is used to grow chemoorganotrophically.
Free
True False
Q 61Q 61
Which of the following is NOT correct regarding the purple photosynthetic bacteria photosynthetic apparatus?
A)Apparatus is straight to decrease surface area and contain reactions
B)Performs anoxygenic photosynthesis
C)Possesses bacteriochlorophylls a or b
D)Apparatus is continuous with the plasma membrane
E)Has intracytoplasmic membranes (ICMs)to provide space for photosynthetic units (PSUs)
Free
Multiple Choice
Q 62Q 62
Nitrifiers are chemolithoautotrophs that use either as electron donors in a process called nitrification.
Free
Short Answer
Q 63Q 63
In nitrification,electrons are donated to an electron transport chain from ammonia or from nitrite to be oxidized to serving as the terminal electron acceptor.
Free
Short Answer
Q 64Q 64
All terrestrial ammonia-oxidizing bacteria are -proteobacteria,including Nitrosomonas and Nitrosospira in the Nitrosomonadaceae family.
Free
True False
Q 65Q 65
Which of the following is recognized as a microbe capable of nitrification?
A)Nitrosomonas europaea
B)Purple nonsulfur bacteria
C)Hyphomicrobium spp.
D)Red photosynthetic bacteria
Free
Multiple Choice
Q 66Q 66
Of the can be used either as reductants for biosynthesis or be donated to the electron transport chain to reduce the terminal electron acceptor,oxygen.
Free
Short Answer
Q 67Q 67
Recently a methanotrophic proteobacterium was reported that oxidizes methane in anoxic environments by coupling methanotrophy with nitrite reduction,known as _______.In this process of reducing nitrite (NO2-)to nitrogen gas (N2),molecular oxygen is released within the microbe,which it harnesses for methane oxidation.
Free
Short Answer
Free
Short Answer
Free
Short Answer
Q 70Q 70
The use of metals as terminal electron acceptors is/are known as _______ because the metals are not incorporated into biomass.
A)dissimilatory metal reduction
B)metallo-neutral
C)Fenton reactions
D)negative metallic addition
Free
Multiple Choice
Q 71Q 71
One strategy used by dissimilatory metal-reducing bacteria that enable their use of insoluble compounds as electron acceptors is to localize cytochromes in the outer membrane,rather than the plasma membrane to enable the direct transfer of electrons from cytochromes to the extracellular metal.
Free
True False
Q 72Q 72
A strategy used by dissimilatory metal-reducing bacteria that enable their use of insoluble compounds as electron acceptors is to transfer electrons to the metal via external,intermediary compounds such as
.
Free
Essay
Q 73Q 73
Species of Shewanella,Geobacter,and some cyanobacteria have evolved a strategy to enable their use of insoluble compounds as electron acceptors: the production of electrically conductive _______ that transfer electrons from the terminal point in the ETC to a metal surface.
or
or
Free
Short Answer
Q 74Q 74
The enzyme formate dehydrogenase (FDH)splits formic acid to H2 and CO2 and is crucial to survival during fermentation because if fermentive intermediates were allowed to accumulate within the cell,the internal pH would become far too _______ to support viability.
A)hypertonic
B)acidic
C)hypotonic
D)alkaline
Free
Multiple Choice
Q 75Q 75
Sulfate- or sulfur-reducing bacteria (SRB)are united by their ability to reduce during anaerobic respiration.
Free
Short Answer
Q 76Q 76
In general,the sulfate-reducing bacteria (SRB)can oxidize carbon substrates such as lactate,formate,butyrate,propionate,pyruvate,or aromatic compounds to acetate.
Free
True False
Q 77Q 77
In dissimilatory sulfate reduction by Desulfovibrio,electrons are passed out of the cell,where they are used to reduce sulfide completely to sulfate.
Free
True False
Q 78Q 78
In an electron transport chain capable of dissimilatory sulfate reduction,the oxidation of sulfate to sulfide requires to form APS.
Free
Short Answer
Q 79Q 79
Because of their environments and physiology,there is great interest in using members of the sulfate-reducing bacteria (SRB)Shewanella and Geobacter in bioremediation or to generate electricity in microbial fuel cells.
Free
True False
Q 80Q 80
Sulfate-reducing bacteria (SRB)are very important in the cycling of sulfur within ecosystems because significant amounts of sulfate are present in almost all aquatic and terrestrial habitats,making SRB widespread and active.
Free
True False
Q 81Q 81
Desulfuromonaceae and Geobacteraceae are strict anaerobic mesophilic bacteria and have been isolated from anoxic _______ environments.
or
or
or
or
or
Free
Essay
Q 82Q 82
In M.xanthus,_______ motility is a kind of twitching that is governed by the production of retractable type IV pili,only observed when cells are in a group.
or
or
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Short Answer
Q 83Q 83
M.xanthus has an alternate motility type,known as _______ motility,because it is exhibited by single cells that leave the group,perhaps scouting for prey and requires a multiprotein motility "machine."
or
or
Free
Short Answer
Q 84Q 84
Although Epsilonproteobacteria make up the smallest of the five proteobacterial classes,species such as Helicobacter and Campylobacter are responsible for significant human disease that range from mild to severe.
Free
True False
Q 85Q 85
The critical enzymatic virulence factor that helps allow Helicobacter pylori survive in the harsh acidic environment of the stomach is _______,which drives the local pH up.
or
Free
Short Answer