WGU D311 MICROBIOLOGY OA FINAL
EXAM (LATEST 2025/2026) | COMPLETE
ACTUAL EXAM | QUESTIONS & 100%
VERIFIED CORRECT ANSWERS |
OBJECTIVE ASSESSMENT | PRE-
ASSESSMENT INCLUDED | GUARANTEED
A+ | BRAND NEW UPDATE!
What is a characteristic of rhizospheres? - ANSWER The rhizosphere is where
plants release organic compounds that can be metabolized by microbes into soil.
Which environment would contain microbes that are psychrophilic? - ANSWER
Glaciers
What is the role of nematodes in soil? - ANSWER They photosynthesize and
fix nitrogen.
Which eukaryote is responsible for producing antibiotics to ward off bacterial
competitors? - ANSWER Fungi
Which symbiotic relationship is an example of mutualism? - ANSWER The
relationship between humans and the Escherichia coli colonizing the human gut
, Which type of symbiotic relationship exists between the Escherichia coli (E. coli)
that inhabit the human gut and the humans who utilize the vitamin K produced by
E. coli? - ANSWER Mutualism
A contagious respiratory feline virus may reactivate a latent infection months to
years after an initial infection.
Which implication does this have for the management of cats in animal shelters? -
ANSWER Cats entering the shelter should be isolated from other sheltered cats.
Two spouses present to the emergency department because of difficulty
swallowing, facial weakness on both sides of the face, and trouble breathing after
consumption of spaghetti sauce made from canned tomatoes. The physician is
aware of reports of similarly affected patients in nearby communities.
What should be the physician's next step after treating these patients? - ANSWER
Contact the state department of public health
The varicella-zoster virus (chicken pox) is endemic in the United States.
What should physicians do to optimally minimize the risk of disease due to this
virus? - ANSWER Vaccinate those who have not already had chicken pox
Miami-Dade County public health officials confirmed transmission of Zika virus
by the local Aedes aegypti mosquito, but the virus had been previously transmitted
by mosquitoes only in Latin America and South America, where the virus is
endemic.
,What can be done to mitigate the spread of the Zika virus so that it does not
become endemic in the United States? - ANSWER Remove outdoor objects
that may accumulate water because they serve as mosquito reservoirs
Which factor determines the level of bioburden (microbial level) allowed and,
therefore, the microbial controls required for items used in a general healthcare
setting? - ANSWER The application or use of the item
Which laboratory biosafety level would be used for managing work with an
organism of moderate risk that is native to the local area? - ANSWER BSL-2
Which microbial control type can be used to completely eliminate all vegetative
bacteria, endospores, fungi, and viruses from an inanimate item? - ANSWER
Sterilization
Which term describes the area specially created and maintained for performing
medical procedures that carry risk from contamination? - ANSWER Sterile
field
Which physical method of control works by removing microorganisms from a
liquid? - ANSWER Filtration
Which physical method of control is used to denature proteins and alter
membranes of microorganisms to prevent spoilage of milk, apple juice, honey, and
other ingestible items to reduce microorganism levels? - ANSWER
Pasteurization
, Which technique will ensure that Clostridium botulinum and botulinum toxin
cannot cause foodborne illness? - ANSWER Boiling foods for at least 10
minutes prior to eating
Which method would be used to sterilize an antibiotic solution? - ANSWER
Membrane filtration
Which chemical treatment would be used before a disinfectant to reach a soiled
surface? - ANSWER A surfactant
Which class of chemical disinfectant denatures proteins and disrupts membranes?
- ANSWER Phenolics
Which chemical is commonly used for hand sanitizers and to degerm a site prior
to injections due to its effective destruction of vegetative bacteria by denaturing
proteins and its quick-drying properties? - ANSWER Alcohols
Which chemical is effective at killing bacterial endospores with sufficient time
and concentration? - ANSWER Peroxygens
Which factor is of particular importance when administering an antibacterial drug
to an immunocompromised patient due to the patient's inability to clear infections?
- ANSWER Bactericidal antimicrobial
Which antibacterial drug works by inhibiting nucleic acid synthesis? - ANSWER
Fluoroquinolones
EXAM (LATEST 2025/2026) | COMPLETE
ACTUAL EXAM | QUESTIONS & 100%
VERIFIED CORRECT ANSWERS |
OBJECTIVE ASSESSMENT | PRE-
ASSESSMENT INCLUDED | GUARANTEED
A+ | BRAND NEW UPDATE!
What is a characteristic of rhizospheres? - ANSWER The rhizosphere is where
plants release organic compounds that can be metabolized by microbes into soil.
Which environment would contain microbes that are psychrophilic? - ANSWER
Glaciers
What is the role of nematodes in soil? - ANSWER They photosynthesize and
fix nitrogen.
Which eukaryote is responsible for producing antibiotics to ward off bacterial
competitors? - ANSWER Fungi
Which symbiotic relationship is an example of mutualism? - ANSWER The
relationship between humans and the Escherichia coli colonizing the human gut
, Which type of symbiotic relationship exists between the Escherichia coli (E. coli)
that inhabit the human gut and the humans who utilize the vitamin K produced by
E. coli? - ANSWER Mutualism
A contagious respiratory feline virus may reactivate a latent infection months to
years after an initial infection.
Which implication does this have for the management of cats in animal shelters? -
ANSWER Cats entering the shelter should be isolated from other sheltered cats.
Two spouses present to the emergency department because of difficulty
swallowing, facial weakness on both sides of the face, and trouble breathing after
consumption of spaghetti sauce made from canned tomatoes. The physician is
aware of reports of similarly affected patients in nearby communities.
What should be the physician's next step after treating these patients? - ANSWER
Contact the state department of public health
The varicella-zoster virus (chicken pox) is endemic in the United States.
What should physicians do to optimally minimize the risk of disease due to this
virus? - ANSWER Vaccinate those who have not already had chicken pox
Miami-Dade County public health officials confirmed transmission of Zika virus
by the local Aedes aegypti mosquito, but the virus had been previously transmitted
by mosquitoes only in Latin America and South America, where the virus is
endemic.
,What can be done to mitigate the spread of the Zika virus so that it does not
become endemic in the United States? - ANSWER Remove outdoor objects
that may accumulate water because they serve as mosquito reservoirs
Which factor determines the level of bioburden (microbial level) allowed and,
therefore, the microbial controls required for items used in a general healthcare
setting? - ANSWER The application or use of the item
Which laboratory biosafety level would be used for managing work with an
organism of moderate risk that is native to the local area? - ANSWER BSL-2
Which microbial control type can be used to completely eliminate all vegetative
bacteria, endospores, fungi, and viruses from an inanimate item? - ANSWER
Sterilization
Which term describes the area specially created and maintained for performing
medical procedures that carry risk from contamination? - ANSWER Sterile
field
Which physical method of control works by removing microorganisms from a
liquid? - ANSWER Filtration
Which physical method of control is used to denature proteins and alter
membranes of microorganisms to prevent spoilage of milk, apple juice, honey, and
other ingestible items to reduce microorganism levels? - ANSWER
Pasteurization
, Which technique will ensure that Clostridium botulinum and botulinum toxin
cannot cause foodborne illness? - ANSWER Boiling foods for at least 10
minutes prior to eating
Which method would be used to sterilize an antibiotic solution? - ANSWER
Membrane filtration
Which chemical treatment would be used before a disinfectant to reach a soiled
surface? - ANSWER A surfactant
Which class of chemical disinfectant denatures proteins and disrupts membranes?
- ANSWER Phenolics
Which chemical is commonly used for hand sanitizers and to degerm a site prior
to injections due to its effective destruction of vegetative bacteria by denaturing
proteins and its quick-drying properties? - ANSWER Alcohols
Which chemical is effective at killing bacterial endospores with sufficient time
and concentration? - ANSWER Peroxygens
Which factor is of particular importance when administering an antibacterial drug
to an immunocompromised patient due to the patient's inability to clear infections?
- ANSWER Bactericidal antimicrobial
Which antibacterial drug works by inhibiting nucleic acid synthesis? - ANSWER
Fluoroquinolones
