Brock's Microbiology|Ch. 16 Diversity of Bacteria|
Ques ons and answers | Updated Rated A+ | NEW 2026
Which phylum harbors the most func onal diversity observed and also has the most cultured
representa ves?
A) Ac nobacteria
B) Bacteroidetes
C) Firmicutes
D) Proteobacteria
proteobacteria
Isola ng a bacterium of the ________ class would be of high impact due to it only having one
cultured representa ve.
A) Alphaproteobacteria
B) Betaproteobacteria
C) Epsilonproteobacteria
D) Zetaproteobacteria
zetaproteobacteria
A pink-pigmented faculta ve methylotrophic bacterium is LEAST likely to be classified as a
member of
A) Rhizobiales.
B) Rhodobacter.
C) Methylobacterium.
D) Proteobacteria.
rhodobacter
Which genus would you most likely find in the pho c layer of the oceans due to its abundance
and aerobic chemoorganotrophic phenotype?
A) Acetobacter
B) Nitrosomonas
C) Paracoccus
D) Pelagibacter
pelagibacter
, Which of the following traits is NOT a characteris c of Caulobacter?
A) abundant in aqua c habitats rich in nutrients
B) produces a cytoplasmic outgrowth (prostheca)
C) aerobic chemoorganotrophs
D) asymmetric cell division
abundant in aqua c habitats rich in nutrients
Trea ng wastewater requires the removal of organic material, and an ideal phenotype of a
bacterium to do this would flocculate to make the cells se5le (rather than staying in suspension)
in a wastewater stream. Which species would be best for this applica on?
A) Bartonella quintana
B) Burkholderia cepacia
C) Wolbachia pipien s
D) Zoogloea ramigera
zoogloea ramigera
While not all members of ________ are pathogenic, two medically relevant species cause
meningi s and gonorrhea in humans.
A) Enterobacter
B) Neisseria
C) Shigella.
D) Staphylococcus
neisseria
Chemolithotrophic ammonia-oxidiza on is a metabolic requirement for members of
A) Nitrosomonas.
B) Nitropseudomonas.
C) Nitrosomonas and Nitrosospira.
D) Nitrosomonas, Nitrosospira, and Nitropseudomonas.
nitrosomonas and nitrosospira
Biosynthesis of vitamin K (menaquinone) by ________ spp. inhabi ng the ________ of humans
is a poten ally important mutualis c rela onship for human health.
A) Bifidobacterium / intes nal tract
B) Bifidobacterium / stomach
C) Escherichia / intes nal tract
D) Escherichia / stomach
Escherichia / intes nal tract
Ques ons and answers | Updated Rated A+ | NEW 2026
Which phylum harbors the most func onal diversity observed and also has the most cultured
representa ves?
A) Ac nobacteria
B) Bacteroidetes
C) Firmicutes
D) Proteobacteria
proteobacteria
Isola ng a bacterium of the ________ class would be of high impact due to it only having one
cultured representa ve.
A) Alphaproteobacteria
B) Betaproteobacteria
C) Epsilonproteobacteria
D) Zetaproteobacteria
zetaproteobacteria
A pink-pigmented faculta ve methylotrophic bacterium is LEAST likely to be classified as a
member of
A) Rhizobiales.
B) Rhodobacter.
C) Methylobacterium.
D) Proteobacteria.
rhodobacter
Which genus would you most likely find in the pho c layer of the oceans due to its abundance
and aerobic chemoorganotrophic phenotype?
A) Acetobacter
B) Nitrosomonas
C) Paracoccus
D) Pelagibacter
pelagibacter
, Which of the following traits is NOT a characteris c of Caulobacter?
A) abundant in aqua c habitats rich in nutrients
B) produces a cytoplasmic outgrowth (prostheca)
C) aerobic chemoorganotrophs
D) asymmetric cell division
abundant in aqua c habitats rich in nutrients
Trea ng wastewater requires the removal of organic material, and an ideal phenotype of a
bacterium to do this would flocculate to make the cells se5le (rather than staying in suspension)
in a wastewater stream. Which species would be best for this applica on?
A) Bartonella quintana
B) Burkholderia cepacia
C) Wolbachia pipien s
D) Zoogloea ramigera
zoogloea ramigera
While not all members of ________ are pathogenic, two medically relevant species cause
meningi s and gonorrhea in humans.
A) Enterobacter
B) Neisseria
C) Shigella.
D) Staphylococcus
neisseria
Chemolithotrophic ammonia-oxidiza on is a metabolic requirement for members of
A) Nitrosomonas.
B) Nitropseudomonas.
C) Nitrosomonas and Nitrosospira.
D) Nitrosomonas, Nitrosospira, and Nitropseudomonas.
nitrosomonas and nitrosospira
Biosynthesis of vitamin K (menaquinone) by ________ spp. inhabi ng the ________ of humans
is a poten ally important mutualis c rela onship for human health.
A) Bifidobacterium / intes nal tract
B) Bifidobacterium / stomach
C) Escherichia / intes nal tract
D) Escherichia / stomach
Escherichia / intes nal tract
