question
This microbe is important in advancing the decay of enamel?
answer
lactobacillus
question
an individuals caries result is "Marked." this person has dental caries. T/F
answer
false
question
This factor for determining caries susceptibility is tested for in lab
answer
numbers of acid producing bacteria
question
the Snyder caries test is a ________ test
answer
qualitative
question
which person would be most likely to develop thrush after being placed on antibiotics?
answer
negative
question
before using mouthwash an individual has a result of moderate. after using mouthwash, the person still has a result of moderate. the mouthwash was:
answer
non-effective
question
Bromcresol green will turn _____ in the presence of acid
answer
yellow
question
what instrument was used to transfer saliva into the Snyder media tube
answer
pipette
question
this bacterium produces a slime layer that allows it to attach to the enamel of the teeth
answer
streptococcus mutans
question
a person with this result would have the most Lactobacilli in their saliva
answer
Marked
question
Listeria monocytogenes is a
answer
psychrotroph
question
microbes growing in compost piles are
answer
thermophiles
question
What incubator would be used to grow a thermophile?
answer
55 degrees Celsius
question
most human pathogens are
answer
mesophiles
question
This organism will be found growing on snow:
answer
psychrophile
question
this organism shows growth at 5-37 degrees Celsius, but no growth at 45 and 55 degrees Celsius
answer
psychrotroph
question
an organism only shows growth at 25 and 37 degrees Celsius
answer
mesophile
question
How were the agar slants inoculated?
answer
Streaked the surface of the slant with a loop
question
the majority of psychrotrophs are
answer
nonpathogenic
question
the temperature at which a microbe will grow best is called the _____ temperature
answer
optimum
question
the pH of yogurt is approximately 4. the microbes found in yogurt would be classified as
answer
acidophiles
question
the pH of milk is approximately 7. the microbes found in milk would be classified as
answer
neutrophiles
question
basophiles show growth at what pH
answer
9 and 12
question
acidophiles show growth at what pH
answer
3
question
microbes growing in the dead sea would be classified as
answer
obligate halophiles
question
Plasmolysis will occur when a microbe is placed in this environment
answer
hypertonic
question
most human pathogens will grow best in this type of environment
answer
isotonic
question
microbes growing on jams and jellies could be classified as
answer
obligate osmophiles
question
the microbe with growth only at 20% NaCl is
answer
obligate halophile
question
which is an example of facultative halophile
answer
staphylococcus
question
This microbe will not completely be destroyed when placed in broth containing 80% sucrose.
answer
bacillus
question
which microbe is a facultative osmophile
answer
Candida
question
a cell will swell when it is placed in this type of environment
answer
hypotonic
question
this microbe shows growth at 2.5, 7, 10 and 15% NaCl but not 20
answer
facultative halophile
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