MICROBIOLOGY EXAM 3 TEST BANK
QUESTIONS WITH 100% CORRECT
ANSWERS; VERIFIED; LATEST UPDATE
2026
____ is when two antimicrobial agents are used together
to produce a degree of pathogen killing that is greater
than that achieved by either drug alone. - correct
answer- Synergism
A ____ medium has added inhibitors that discourage
growth of certain organisms while allowing the growth of
a desired organism. - correct answer- selective
A ____ medium has added inhibitors that discourage
growth of certain organisms while allowing the growth of
a desired organism. - correct answer- Selective
A ____ medium is one where the exact contents are not
known. - correct answer- Complex
,A __________ medium is one in which all ingredients are
known. - correct answer- chemically defined
Acidophiles - correct answer- Prefer a pH of 2
to 5
Ammonification - correct answer- The
conversion of organic nitrogen to ammonia.
Anthrax is cause by the bacteria - correct answer-
Bacillus anthracis
Autoclave - correct answer- A large metal
pressure cooker that uses steam under pressure to
completely destroy all microbial life.
Blood agar is an example of a ________ medium -
correct answer- complex, differential, enriched
Briefly explain microbial antagonism and give one
example. - correct answer- This means microbe
, vs microbe. There are many types of microbes in our body
fighting for space and opportunity for infection. E coli for
example will wipe out all other bacteria given the
opportunity.
Case Fatality Rate - correct answer- the
number of deaths due to a specific disease as compared
to the total number of cases of the disease
Commensalism - correct answer- A symbiotic
relationship that is beneficial to one symbiont and of no
consequence to the other.
Communicable Disease - correct answer- An
infectious disease that can be transmitted from one
person to another.
Community - correct answer- groups of
populations of different species that interact with one
another in the same area.
QUESTIONS WITH 100% CORRECT
ANSWERS; VERIFIED; LATEST UPDATE
2026
____ is when two antimicrobial agents are used together
to produce a degree of pathogen killing that is greater
than that achieved by either drug alone. - correct
answer- Synergism
A ____ medium has added inhibitors that discourage
growth of certain organisms while allowing the growth of
a desired organism. - correct answer- selective
A ____ medium has added inhibitors that discourage
growth of certain organisms while allowing the growth of
a desired organism. - correct answer- Selective
A ____ medium is one where the exact contents are not
known. - correct answer- Complex
,A __________ medium is one in which all ingredients are
known. - correct answer- chemically defined
Acidophiles - correct answer- Prefer a pH of 2
to 5
Ammonification - correct answer- The
conversion of organic nitrogen to ammonia.
Anthrax is cause by the bacteria - correct answer-
Bacillus anthracis
Autoclave - correct answer- A large metal
pressure cooker that uses steam under pressure to
completely destroy all microbial life.
Blood agar is an example of a ________ medium -
correct answer- complex, differential, enriched
Briefly explain microbial antagonism and give one
example. - correct answer- This means microbe
, vs microbe. There are many types of microbes in our body
fighting for space and opportunity for infection. E coli for
example will wipe out all other bacteria given the
opportunity.
Case Fatality Rate - correct answer- the
number of deaths due to a specific disease as compared
to the total number of cases of the disease
Commensalism - correct answer- A symbiotic
relationship that is beneficial to one symbiont and of no
consequence to the other.
Communicable Disease - correct answer- An
infectious disease that can be transmitted from one
person to another.
Community - correct answer- groups of
populations of different species that interact with one
another in the same area.
