UTA-Microbiology Exam 2-Dr.Parks
2025 Questions and Answers
Prokaryotes Habitats - --CORRECT ANSWER---found in hot springs, ice caps,
deep ocean, skin, and mucosal surfaces
-are ubiquitous
-why: they are very adaptable and resilient and are able to switch metabolic
respiration methods
-diversity is important: stability of ecosystems, carbon and nitrogen fixation,
environmental cleanup
-human pathogens and climate change
Microbiomes - --CORRECT ANSWER---The diverse communities of bacteria
that live on or within the body and are essential to bodily function.
-prokaryotes + eukaryote microbes = microbiome
-differ btwn different sites and organisms
-resident: natural there
-transient: not there or there for a short while
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,Mutualism - --CORRECT ANSWER---both are benefitted
-ex: gut nutrient metabolism
Amensalism - --CORRECT ANSWER---A is harmed and B is unaffected
-ex: antimicrobial defense on skin
Commensalism - --CORRECT ANSWER---A is benefitted and B is unaffected
-ex: skin cells as food source
Neutralism - --CORRECT ANSWER---both are unaffected
-ex:spores in soil
Parasitism - --CORRECT ANSWER---A is benefitted and B is harmed
-ex: tuberculosis, leprosy, etc.
Taxonomy of Prokaryotes - --CORRECT ANSWER---do not reproduce sexually
-not many distinctive morphological features
-molecular, biochemical, microscopi, and nucleotide sequences together is best
approach
Gram Negative Phyla - --CORRECT ANSWER---Proteobacteria
-Spirochete
-CFB group
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,-Planctomycetes
-Phototrophic bacteria
Gram Postitive Phyla - --CORRECT ANSWER---Actinobacteria
-Firmicutes
Atypical - --CORRECT ANSWER---neither
-tenericutes
Alphaproteobacteria - --CORRECT ANSWER---gram (-) proteobacteria
-oligotrophs: lives in low nutrient environments
-obligate intracellular and must have host to be metabolically active
-Rickettsia spp.: causative agent for Rocky Mountain spotted fever and typhus
fever, transmitted from tick, others spread through lice
-Chlamydia spp.: causative agents for lymphogranuloma venereum (STD), spreads
rapidly, endospore like
Agrobacterium - --CORRECT ANSWER---gram-negative bacillus
-plant pathogen, one species
-A.tumefaciens causes tumors in plants
Rhizobium - --CORRECT ANSWER---gram-negative, rectangular bacilli with
rounded ends forming clusters
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, - nitrogen fixing batters that live in soil and form symbiotic relationship with roots
of legumes
Betaproteobacteria - --CORRECT ANSWER---gram (-) proteobacteria
-eutrophs: require many nutrients (copiotrophs)
-Bordetella spp.: causative agents with whooping cough (pertussis) and kneel
cough (dogs), produce toxins to paralyze lung cilia
-Neisseria gonorrhea: causative agent for gonorrhea STD, painful peeing
-Neisseria meningitides: causative agent for bacterial meningitis, difficult to culture,
typically live off our blood
Gammaproteobacteria - --CORRECT ANSWER---gram negative
-most diverse
-Pseudomonas aeruginosa - common infection of wounds, urinary tract, &
respiratory tract
-Pasteurella haemolytica - causative agent for severe pneumonia in animals
-Haemophilus influenza - causative agent for upper & lower respiratory infections
(does not cause influenza)
-Vibrio spp. - commonly found in alkaline environments such as ocean ports &
lagoons, gastrointestinal disease, cellulitis, blood-borne infections
-Vibrio cholera - causative agent of cholera and common to water contamination
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 4
2025 Questions and Answers
Prokaryotes Habitats - --CORRECT ANSWER---found in hot springs, ice caps,
deep ocean, skin, and mucosal surfaces
-are ubiquitous
-why: they are very adaptable and resilient and are able to switch metabolic
respiration methods
-diversity is important: stability of ecosystems, carbon and nitrogen fixation,
environmental cleanup
-human pathogens and climate change
Microbiomes - --CORRECT ANSWER---The diverse communities of bacteria
that live on or within the body and are essential to bodily function.
-prokaryotes + eukaryote microbes = microbiome
-differ btwn different sites and organisms
-resident: natural there
-transient: not there or there for a short while
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,Mutualism - --CORRECT ANSWER---both are benefitted
-ex: gut nutrient metabolism
Amensalism - --CORRECT ANSWER---A is harmed and B is unaffected
-ex: antimicrobial defense on skin
Commensalism - --CORRECT ANSWER---A is benefitted and B is unaffected
-ex: skin cells as food source
Neutralism - --CORRECT ANSWER---both are unaffected
-ex:spores in soil
Parasitism - --CORRECT ANSWER---A is benefitted and B is harmed
-ex: tuberculosis, leprosy, etc.
Taxonomy of Prokaryotes - --CORRECT ANSWER---do not reproduce sexually
-not many distinctive morphological features
-molecular, biochemical, microscopi, and nucleotide sequences together is best
approach
Gram Negative Phyla - --CORRECT ANSWER---Proteobacteria
-Spirochete
-CFB group
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
,-Planctomycetes
-Phototrophic bacteria
Gram Postitive Phyla - --CORRECT ANSWER---Actinobacteria
-Firmicutes
Atypical - --CORRECT ANSWER---neither
-tenericutes
Alphaproteobacteria - --CORRECT ANSWER---gram (-) proteobacteria
-oligotrophs: lives in low nutrient environments
-obligate intracellular and must have host to be metabolically active
-Rickettsia spp.: causative agent for Rocky Mountain spotted fever and typhus
fever, transmitted from tick, others spread through lice
-Chlamydia spp.: causative agents for lymphogranuloma venereum (STD), spreads
rapidly, endospore like
Agrobacterium - --CORRECT ANSWER---gram-negative bacillus
-plant pathogen, one species
-A.tumefaciens causes tumors in plants
Rhizobium - --CORRECT ANSWER---gram-negative, rectangular bacilli with
rounded ends forming clusters
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
, - nitrogen fixing batters that live in soil and form symbiotic relationship with roots
of legumes
Betaproteobacteria - --CORRECT ANSWER---gram (-) proteobacteria
-eutrophs: require many nutrients (copiotrophs)
-Bordetella spp.: causative agents with whooping cough (pertussis) and kneel
cough (dogs), produce toxins to paralyze lung cilia
-Neisseria gonorrhea: causative agent for gonorrhea STD, painful peeing
-Neisseria meningitides: causative agent for bacterial meningitis, difficult to culture,
typically live off our blood
Gammaproteobacteria - --CORRECT ANSWER---gram negative
-most diverse
-Pseudomonas aeruginosa - common infection of wounds, urinary tract, &
respiratory tract
-Pasteurella haemolytica - causative agent for severe pneumonia in animals
-Haemophilus influenza - causative agent for upper & lower respiratory infections
(does not cause influenza)
-Vibrio spp. - commonly found in alkaline environments such as ocean ports &
lagoons, gastrointestinal disease, cellulitis, blood-borne infections
-Vibrio cholera - causative agent of cholera and common to water contamination
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 4
