MBIO 3401 Exam 3 Questions and Answers
100% Correct
What are the gram positive bacteria? Actinomycetes and Nonmycelial actinobacteria
Proteobacteria -triple layered cell envelope
-DIVERSE METABOLISM
what is photoheterotropy? able to switch metabolic pathways
Alphaproteobacteria -Oligotroph- capable of living in low-nutrient environments such as
deep oceanic sediments, glacial ice, or deep undersurface soil
what are the endosymbionts of alphaproteobacteria -nitrogen fixers
-rhizobium
-sinorhizobium
Rickettsia -intracelular pathogens
,-clade includes mitochondria
-causes rikketsia rickettsii
what alphaproteobacterium causes rocky mountain spotted fever? rikketsia rickettsii
how does rickettsia move the use of the actin tail
Betaproteobacteria -nitrifiers oxidize ammonia to nitrite
What are nitrosomonas? used in nitrifying water
what are the pathogens of betaproteobacteria neisseria gonnorrheae
Gammaproteobacteria: enterobacteriaceae -e. coli
-SWARMING BEHAVIOR
Gammaproteobacteria: aerobic rods Pseudomonas and Legionella pneumophila
, Psudomonas species -severe wound/cut/burn
-extracellular
-forms biofilms
Legionella pneumophila -grows intracellularly within macrophages or amoebas
-like to live inside a vacuole
Deltaproteobacteria: myxcoccus xanthus -soil bacteria that can grow as isolated cells or
aggregate into fruiting bodies
-gliding motility: myxospores
Deltaproteobacteria: Bdellovibrio parasitizes proteobacterial cells
Deltaproteobacteria: epsilonproteobacteria microaerophilic helical pathogens
Camplyobacter Causes blood poisoning and intestinal inflammation
100% Correct
What are the gram positive bacteria? Actinomycetes and Nonmycelial actinobacteria
Proteobacteria -triple layered cell envelope
-DIVERSE METABOLISM
what is photoheterotropy? able to switch metabolic pathways
Alphaproteobacteria -Oligotroph- capable of living in low-nutrient environments such as
deep oceanic sediments, glacial ice, or deep undersurface soil
what are the endosymbionts of alphaproteobacteria -nitrogen fixers
-rhizobium
-sinorhizobium
Rickettsia -intracelular pathogens
,-clade includes mitochondria
-causes rikketsia rickettsii
what alphaproteobacterium causes rocky mountain spotted fever? rikketsia rickettsii
how does rickettsia move the use of the actin tail
Betaproteobacteria -nitrifiers oxidize ammonia to nitrite
What are nitrosomonas? used in nitrifying water
what are the pathogens of betaproteobacteria neisseria gonnorrheae
Gammaproteobacteria: enterobacteriaceae -e. coli
-SWARMING BEHAVIOR
Gammaproteobacteria: aerobic rods Pseudomonas and Legionella pneumophila
, Psudomonas species -severe wound/cut/burn
-extracellular
-forms biofilms
Legionella pneumophila -grows intracellularly within macrophages or amoebas
-like to live inside a vacuole
Deltaproteobacteria: myxcoccus xanthus -soil bacteria that can grow as isolated cells or
aggregate into fruiting bodies
-gliding motility: myxospores
Deltaproteobacteria: Bdellovibrio parasitizes proteobacterial cells
Deltaproteobacteria: epsilonproteobacteria microaerophilic helical pathogens
Camplyobacter Causes blood poisoning and intestinal inflammation
