question
approx how man different microbial species could be part of the oral microbiome
answer
600
question
which of the following is a fungal species that is part of the oral microbiome
a. streptococcus mutans
b. candida albicans
c. porphyromonas gingivalis
d. enterococcus faecalis
e. streptococccus gordonii
a. streptococcus mutans
b. candida albicans
c. porphyromonas gingivalis
d. enterococcus faecalis
e. streptococccus gordonii
answer
candida albicans
question
ultimate enzyme of S. mutans that is responsible for its large production of lactic acid during sucrose metabolism
answer
lactate dehydrogenase
question
flagellar movement in bacteria directly relies upon which energy currency
answer
proton motive force
question
phase of bacterial growth where bacterial pathogens are most susceptible to a large number of antibiotics
answer
log phase
question
antimicrobial agents that stop the growth of bacteria but do not kill them
answer
bacteriostatic
question
in the catalase test, Streptococcus mutans is going to have what result
answer
negative for catalase
question
nalidixic acid, ciprofloxacin, novobiocin are antibiotics that target which enzyme of bacterial replication
answer
gyrase
question
which bacterial regulation system requires that translation of an operons mRNA begins before further transcription of the operon is repressed
answer
attenuation
question
microbial transduction is
a. the reverse of catabolite repression
b. induction of gene expression
c. bacterial gene transfer using a bacteriophage
d. conjugation promoted by plasmids
e. attenuation
a. the reverse of catabolite repression
b. induction of gene expression
c. bacterial gene transfer using a bacteriophage
d. conjugation promoted by plasmids
e. attenuation
answer
bacterial gene transfer using bacteriophage
question
bacterium with a bacteriophage genome incorporated into its DNA is referred as?
answer
a lysogen (process is called lysogeny)
question
Phylum of streptococcus?
answer
Firmicutes
question
Phylum of porphyromonas gingival is?
answer
Bacteriodetes
question
What eukaryotic organisms is synergistic with strep mutans?
answer
Candida albicans
question
What pneumonia is associated with a dental waterline?
answer
Lagionelle pneumonophila
question
What glucosyltransferase contributes the most to polysaccharide of the plaque biofilm?
answer
GtfB
question
What projects through the entire supergingival plaque?
answer
Corynebacterium
question
Glucosyltransferases bind tot he surface and synthesize _________ in situ using sucrose as a substrate.
answer
Glucan
question
What is the function of glycotransferases?
answer
To convert glycogen to glucose in the liver
question
True or False. Aciduric and Acidogenic mean the same thing.
answer
False
question
True or false. P. Gingivalis is an obligate aerobe.
answer
False; obligate anaerobe
question
True or false; S. Mutans is an aerotolerant anaerobe.
answer
True
question
Enzyme given as a clot bursting factor:
answer
Streptokinase
question
Gram staining of p. Gingivalis?
answer
Gram negative
question
Gram staining of s. Mutans?
answer
Gram positive
question
What lowers pH of biofilm?
answer
Lactic acid
question
Acidogenic:
answer
Produce acid
question
Aciduric:
answer
Growth in acidic pH
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