WGU D311 MICROBIOLOGY UPDATED ACTUAL FINAL
PAPER QUESTIONS AND ANSWERS MARKED A+
✔✔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? -
✔✔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? - ✔✔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?
- ✔✔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? - ✔✔BSL-2
✔✔Which microbial control type can be used to completely eliminate all vegetative
bacteria, endospores, fungi, and viruses from an inanimate item? - ✔✔Sterilization
✔✔Which term describes the area specially created and maintained for performing
medical procedures that carry risk from contamination? - ✔✔Sterile field
✔✔Which physical method of control works by removing microorganisms from a liquid?
- ✔✔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? - ✔✔Pasteurization
✔✔Which technique will ensure that Clostridium botulinum and botulinum toxin cannot
cause foodborne illness? - ✔✔Boiling foods for at least 10 minutes prior to eating
✔✔Which method would be used to sterilize an antibiotic solution? - ✔✔Membrane
filtration
✔✔Which chemical treatment would be used before a disinfectant to reach a soiled
surface? - ✔✔A surfactant
, ✔✔Which class of chemical disinfectant denatures proteins and disrupts membranes? -
✔✔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? - ✔✔Alcohols
✔✔Which chemical is effective at killing bacterial endospores with sufficient time and
concentration? - ✔✔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? -
✔✔Bactericidal antimicrobial
✔✔Which antibacterial drug works by inhibiting nucleic acid synthesis? -
✔✔Fluoroquinolones
✔✔What is showcased when two antibiotics provide bacteriostatic inhibition when taken
separately but bactericidal inhibition when combined? - ✔✔Synergism
✔✔Which drug class inhibits cell wall biosynthesis? - ✔✔Penicillins
✔✔Which antimicrobial agent is effective against a cold sore caused by a herpes
infection? - ✔✔Antivirals
✔✔Which organism would be affected by an antimicrobial agent that disrupts
peptidoglycan synthesis? - ✔✔Bacteria
✔✔Which cellular function would be disrupted by an antimicrobial that targets
peptidoglycan synthesis? - ✔✔Cell wall synthesis
✔✔Which structure is damaged by an antifungal that targets ergosterol synthesis? -
✔✔The cell membrane
✔✔Which molecule is responsible for presenting viral antigen to cytotoxic T cells? -
✔✔Major histocompatibility complex I (MHC I)
correct
✔✔Which statement correctly describes humoral immunity? - ✔✔Humoral immunity is
mediated by B cell-produced antibodies.
PAPER QUESTIONS AND ANSWERS MARKED A+
✔✔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? -
✔✔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? - ✔✔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?
- ✔✔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? - ✔✔BSL-2
✔✔Which microbial control type can be used to completely eliminate all vegetative
bacteria, endospores, fungi, and viruses from an inanimate item? - ✔✔Sterilization
✔✔Which term describes the area specially created and maintained for performing
medical procedures that carry risk from contamination? - ✔✔Sterile field
✔✔Which physical method of control works by removing microorganisms from a liquid?
- ✔✔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? - ✔✔Pasteurization
✔✔Which technique will ensure that Clostridium botulinum and botulinum toxin cannot
cause foodborne illness? - ✔✔Boiling foods for at least 10 minutes prior to eating
✔✔Which method would be used to sterilize an antibiotic solution? - ✔✔Membrane
filtration
✔✔Which chemical treatment would be used before a disinfectant to reach a soiled
surface? - ✔✔A surfactant
, ✔✔Which class of chemical disinfectant denatures proteins and disrupts membranes? -
✔✔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? - ✔✔Alcohols
✔✔Which chemical is effective at killing bacterial endospores with sufficient time and
concentration? - ✔✔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? -
✔✔Bactericidal antimicrobial
✔✔Which antibacterial drug works by inhibiting nucleic acid synthesis? -
✔✔Fluoroquinolones
✔✔What is showcased when two antibiotics provide bacteriostatic inhibition when taken
separately but bactericidal inhibition when combined? - ✔✔Synergism
✔✔Which drug class inhibits cell wall biosynthesis? - ✔✔Penicillins
✔✔Which antimicrobial agent is effective against a cold sore caused by a herpes
infection? - ✔✔Antivirals
✔✔Which organism would be affected by an antimicrobial agent that disrupts
peptidoglycan synthesis? - ✔✔Bacteria
✔✔Which cellular function would be disrupted by an antimicrobial that targets
peptidoglycan synthesis? - ✔✔Cell wall synthesis
✔✔Which structure is damaged by an antifungal that targets ergosterol synthesis? -
✔✔The cell membrane
✔✔Which molecule is responsible for presenting viral antigen to cytotoxic T cells? -
✔✔Major histocompatibility complex I (MHC I)
correct
✔✔Which statement correctly describes humoral immunity? - ✔✔Humoral immunity is
mediated by B cell-produced antibodies.
