WGU D311 MICROBIOLOGY OA EXAM |
100% CORRECTLY ANSWERED AND
GRADED A+ | 2025 LATEST GUIDE
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?
- Correct Answer - Alcohols
Which chemical is effective at killing bacterial endospores with sufficient
time and concentration?
- Correct 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?
- Correct Answer - Bactericidal antimicrobial
Which antibacterial drug works by inhibiting nucleic acid synthesis?
- Correct Answer - Fluoroquinolones
,What is showcased when two antibiotics provide bacteriostatic inhibition
when taken separately but bactericidal inhibition when combined?
- Correct Answer - Synergism
Which drug class inhibits cell wall biosynthesis?
- Correct Answer - Penicillins
Which antimicrobial agent is effective against a cold sore caused by a
herpes infection?
- Correct Answer - Antivirals
Which organism would be affected by an antimicrobial agent that
disrupts peptidoglycan synthesis?
- Correct Answer - Bacteria
Which cellular function would be disrupted by an antimicrobial that
targets peptidoglycan synthesis?
- Correct Answer - Cell wall synthesis
Which structure is damaged by an antifungal that targets ergosterol
synthesis?
- Correct Answer - The cell membrane
,Which molecule is responsible for presenting viral antigen to cytotoxic T
cells?
- Correct Answer - Major histocompatibility complex I (MHC I)
correct
Which statement correctly describes humoral immunity?
- Correct Answer - Humoral immunity is mediated by B cell-produced
antibodies.
What is the difference between antigens (Ags) and pathogen-associated
molecular patterns (PAMPs)?
- Correct Answer - PAMPs are found on numerous pathogens; Ags are
unique to specific pathogens.
Which complete region of an antibody is the site of complement factor
binding?
- Correct Answer - Fragment crystallization (Fc) region
How do vaccines provide immunity to disease?
- Correct Answer - Vaccines stimulate both humoral and cell-mediated
immune responses.
, Which vaccine type provides immunity by introducing the body to a less
virulent pathogen?
- Correct Answer - Attenuated vaccines
Which characteristic is a disadvantage of attenuated vaccines?
- Correct Answer - Attenuated vaccines result in the development of the
signs and symptoms of disease.
Which vaccine type was formulated to combat capsule-producing
pathogens?
- Correct Answer - Conjugate vaccines
Which type of immunity is generated from vaccination?
- Correct Answer - Artificially active acquired immunity
What is the effect of herd immunity on a population?
- Correct Answer - The protection of susceptible individuals in a
population from a disease
What is the global financial impact of vaccinating for measles?
- Correct Answer - The cost of vaccination is less than the overall cost of
medical care and lost work time due to measles infection, so money is
saved by vaccinating the public.
100% CORRECTLY ANSWERED AND
GRADED A+ | 2025 LATEST GUIDE
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?
- Correct Answer - Alcohols
Which chemical is effective at killing bacterial endospores with sufficient
time and concentration?
- Correct 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?
- Correct Answer - Bactericidal antimicrobial
Which antibacterial drug works by inhibiting nucleic acid synthesis?
- Correct Answer - Fluoroquinolones
,What is showcased when two antibiotics provide bacteriostatic inhibition
when taken separately but bactericidal inhibition when combined?
- Correct Answer - Synergism
Which drug class inhibits cell wall biosynthesis?
- Correct Answer - Penicillins
Which antimicrobial agent is effective against a cold sore caused by a
herpes infection?
- Correct Answer - Antivirals
Which organism would be affected by an antimicrobial agent that
disrupts peptidoglycan synthesis?
- Correct Answer - Bacteria
Which cellular function would be disrupted by an antimicrobial that
targets peptidoglycan synthesis?
- Correct Answer - Cell wall synthesis
Which structure is damaged by an antifungal that targets ergosterol
synthesis?
- Correct Answer - The cell membrane
,Which molecule is responsible for presenting viral antigen to cytotoxic T
cells?
- Correct Answer - Major histocompatibility complex I (MHC I)
correct
Which statement correctly describes humoral immunity?
- Correct Answer - Humoral immunity is mediated by B cell-produced
antibodies.
What is the difference between antigens (Ags) and pathogen-associated
molecular patterns (PAMPs)?
- Correct Answer - PAMPs are found on numerous pathogens; Ags are
unique to specific pathogens.
Which complete region of an antibody is the site of complement factor
binding?
- Correct Answer - Fragment crystallization (Fc) region
How do vaccines provide immunity to disease?
- Correct Answer - Vaccines stimulate both humoral and cell-mediated
immune responses.
, Which vaccine type provides immunity by introducing the body to a less
virulent pathogen?
- Correct Answer - Attenuated vaccines
Which characteristic is a disadvantage of attenuated vaccines?
- Correct Answer - Attenuated vaccines result in the development of the
signs and symptoms of disease.
Which vaccine type was formulated to combat capsule-producing
pathogens?
- Correct Answer - Conjugate vaccines
Which type of immunity is generated from vaccination?
- Correct Answer - Artificially active acquired immunity
What is the effect of herd immunity on a population?
- Correct Answer - The protection of susceptible individuals in a
population from a disease
What is the global financial impact of vaccinating for measles?
- Correct Answer - The cost of vaccination is less than the overall cost of
medical care and lost work time due to measles infection, so money is
saved by vaccinating the public.
