Final: all old exam questions Flashcards
what is the mordant used in gram stain
crystal violet
safranin
ethanol
congo red
none
none
what method would you use to find the number of viable bacteria in a liquid culture
streak plating
gram stain
dilution
pipetting
none
dilution
which predates the germ theory
jenners vaccine
ID of cause of mad cow disease
semmelweis childbed fever
ID of HIV and AIDS
all
jenner
which is only found in gram positive bacteria
pentaglycine crosslinkers
peptidoglycan
chitin
braums lipoprotein
none
pentaglycine crosslinkers
when is myxobacterial fruiting bodies formed
attacking prey
anaerobic
N2 rich environment
starving
none
starving
which is present in all bacteria
pili
fimbriae
flagella
LPS
none
non
what disease can be prevented by water purification
HIV
malaria
tuberculosis
all
none
none
what agent is responsible for malaria
DNA virus
helminth
fungus
protozoan
none
protozoan
which has LPS in its outer membrane
plasmodium falciparum
staphylococcus aureus
clostridium tetani
pseudomonas aeruginosa
all
pseudomonas aeruginosa`
peptidoglycan of G- bacteria caintains what diamino acid
meso-diaminopimelic acid
dilysine
diadenine
D-alanine-D-alanine
none
meso-diaminopimelic acid
spirochete flagella
are wrapped around the cell body between two membranes
are the same as pili
are in a clump at one end of the cell
are distributed around the cell
none
are wrapped around the cell body between two membranes
cryo-electron tomography is good for
exopolysaccharides
individual crystallized proteins
bones
flagella
none
flagella
which is only treatable with a long course of antibiotics
mycobacterium tuberculosis
yersinia pestis
staphylococcus aureus
vaccinia virus
none
mycobacterium tuberculosis
which is a spirillum
e. coli
clostridium botullinum
bacillus subtilis
heliobacter pylori
non
heliobacter pylori
who created the postulates
ignaz semmelweis
louis pasteur
alexander flemming
fanny hesse
none
none
what is the term for bacteria that can be different shapes
pleitrophic
pleomorphic
plastic
shapeshifting
none
pleomorphic
what is the name of the molecule involved in moving peptidoglycan subunits across the membrane
glycerol
sphingomyelin
sialic acid
bactoprenol
none
bactoprenol
what process in yeast is responsible for bread rising
fermentation
respiration
nitrogen fixation
photosynthesis
none
respiration
what diseas was john snow trying to stop
childbed fever
monkeypox
smallpox
cholera
syphilis
cholera
what is another name for the exopolysaccharide matrix in pathogens
LPS
slime capsule
LTA
glycolayer
none
slime capsule
which is a good target for antibiotics
cell memrbane
splicing
bioluminescence
peptidoglycan synthesis
all
peptidoglycan synthesis
what is the term for bacteria growing on a surface embedded in matrix
biocrust
biolayer
biology
biofilm
none
biofilm
what is the difference between pili and fimbriae
pili are made from carbs, fimbriae proteins
pili are for conjugation, fim for motility
fim are typically larger and more common
fim are involved in urogenital pathogen attachment
none
fim are involved in urogenital pathogen attachment
which of these flagellar arrangements is a clump at one end of the cell
monotrichous
peritrichous
amphitrichous
lophotrichous
none
lophotrichous
what demonstrates that DNA is the genetic material
flagella
capsule
secretion complexes
LPS
none
capsule
which is an example of active transport
movement of sodium ions along their gradient
pumping K+ across membrane using ATP
aquaporins
ink spreading in a beaker of water
none
pumping K+ across membrane using ATP
why is turgor pressure a concern for bacteria
water will flow into cells under most conditions
water is toxic
membranes are fragile
mechanoreceptors are fragile and will lead to apoptosis
all
water will flow into cells under most condition
which is the toxic part of LPS
oligosaccharide
Lipid A
core oligosaccharide
brauns lipoprotein
the whole thing
Lipid A
what molecule anchors peptidoglycan to G+ cell membrane
Lipoteichoic acid
L-alanine
meso-diaminopimelicacid
pentaglycine
none
lipoteichoic acid
what is the space between two membranes in G- bacteria
perimeter space
peritrichous space
perineum space
periplasmic space
none
periplasmic space
what is the enzyme that cross links peptidoglycan
D-ala D-ala transpeptidase
pentaglycine ligase
diaminopimelic acid transacetylase
beta-galactidase
none
D-ala D-ala transpeptidase
what is the column used to study soil sedements
ehrlich column
metchnikoff column
pasteur column
winogradsky column
none
winogradsky column
which global disease has dropped massively in the last 20 years
diarrheal
smallpox
gonorrhea
covid
none
diarrheal
which bacteria would be pink in a gram stain
bacillus anthracis
neisseria gonorrhea
trypanosoma cruzi
enterococcus faecalis
all
neiserria gonorrheae
what energy capture and storage process is based on the movement of protons across a membrane
chemotaxis
chemoautotrophy
stereochemistry
chemiosmosis
none
chemiosmosis
what two words form the basis for the word vaccination
vaccinia and variolation
describe the distribution in hydrophilic and hydrophobic regions on the transmembrane of a channel protein
phobic is on one side w/ phobic tails and philic is on both sides
what is one unique thing about mad cow disease
results from a prion
what disease spreads through culex mosquitos and affects birds
west-nile encephalitis
what secretion system is similar in mechanism to flagellar motility
type 3 secretion
what bacteria makes alot of antibiotics
streptomyces
what bacterium causes lyme disease
borrelia burgdorferi
what protein in HIV converts RNA to DNA
reverse transcriptase
what is one bacterium and one virus that causes diarrheal disease
e. coli and rotavirus
what protozoan is spread by anopheles mosquitos
malaria, plasmodia
which is present in 50% of bacterial cell
carbon
phosphorus
oxygen
nitrogen
none
carbon
a bacterium only growing when oxygen is present
obligate aerobe
facultative anaerobe
aerotolerant anaerobe
microaerophile
onligate anaerobe
obligate aerobe
which is a quorum sensing signal
polypeptide
c-di-GMP
acyl homoserine actinide
n-acetyl-glucosamine
none
none
which is an electron donor during growth
oxidized
reduced
hydroxylated
lysed
none
oxidized
the mitochondria is most likely the result of endosymbiosis by a
virus
cyanobacterium
spirochete
alpha-proteobacterium
none
alpha-proteobacterium
what type of photosynthesis produces less energy
oxygenic
non-cyclic
carbonic
cyclic
cyclic
which is more reduced, pyruvate or fructose-biphosphate
same
fructose
pyruvate
depends on e- acceptor
depends on pH
fructose
bacteria can be involved in the nitrogen cycle by
oxidizing ammonium
fixing N2 gas from atmosphere
reducing nitrite
reducing nitrate
all
all
sulfate an nitrate
can cycle through an environment
can be electron donors
can be electron acceptors
can be limiting factors for growth
all
can be electron acceptors
which forms a stalked and swarmer cell
e. coli
staphylococcus aureus
caulobacter crescentus
pseudomonas aeruginosa
none
caulobacter crescentus
the process of fermentation
can be used to produce lactose
can create a proton gradient
is used industrially to produce valuable chemicals
can result in the formation of sodium hydroxide
all
is used industrially
phase of bacterial growth where the rate of growth is the same as rate of death
log
exponential
lag
stationary
none
stationary
which is a name for a type of glycolysis pathway
entner-douderoff
elon-esterhazy
egon-muskberger
calvin-benson
none
entner-douderoff
what is the name of a compound in the membrane that is involved in electron transport
cytochrome
succinate
pyruvate
siderophore
none
cytochrome
microbes that have bacteriorhodopsin
acetogens
extremophiles/halophiles
methanogens
halogens
extremophiles/halophiles
fossils that are though to be first evidence of life on earth
lithotrophs
stalagmites
hot springs
stalactites
none
none
what temp would you expect to find a hyperthermophile
35
4
60
105
37
105
what is the name of an enzyme that is typically found in all bacteria except obligate anaerobes
superoxide dismutase
sulfatase
phosphatase
catalase
none
superoxide dismutase
at what pH would a neutrophile be
2
4
7
9
10
7
what is shelfords law of tolerance
energy can neither be created nor destroyed
chance favors the prepared mind
the limiting nutrient in an environment will determine total biomass
outside certain physical limits, microbes will not grow no matter the available nutrients
every action has an equal and opposite reaction
outside certain physical limits, microbes will not grow no matter the available nutrients
a bacterium that uses glucose as a a source of electrons and sulfate as an electron acceptor would be called
an aerobic lithotroph
an aerobic heterotroph
an aerobic photoautotroph
an aerobic heterotroph
none
an aerobic heterotroph
a chemostat can allow you to study
death phase
maintenance energy
competition as the culture runs out of nutrients
growth at high flow rates
none
maintenance energy
what type of environmental stress do compatible solutes help bacteria deal with
osmolarity
turbidity
heat
hypotonicity
none
osmolarity
what eukaryotic protein is FtsZ similar to
beta-galactosidase
tubulin
chaperone protein
filamentous temperature sensitive
none
tubulin
which quorum sensing signal cannot pass through the membrane and binds to a receptor on the surface
cAMP
peptide pheromone
LuxR
acyl-homoserinelactone
16S rRNA
peptide pheromone