WGU D311 Microbiology STUDY FOR ONLINE
ASSESMENT 200 QUESTIONS AND CORRECT
ANSWERS WITH COMPLETE SOLUTIONS | 100%
PASS RATE | GRADED A+ | NEW UPDATE 2026/2027.
What is a characteristic of rhizospheres? - CORRECT ANSWER-The rhizosphere is where
plants release organic compounds that can be metabolized by microbes into soil.
Which type of immunity is generated from vaccination? - CORRECT ANSWERArtificially
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.
Which vaccine was the first to provide immunity, paving the way for the subsequent
vaccination campaigns? - CORRECT ANSWER-Smallpox
A patient developed peritonitis (infection of the abdominal cavity) after intestinal surgery.
The attending physician suspects a nosocomial infection as the cause. - CORRECT
ANSWER-Adhere to surgical suite cleaning and disinfection protocols
Which pathogen does this physician suspect? - CORRECT ANSWER-Methicillin-resistant
Staphylococcus aureus
,A physician selects the antibiotic azithromycin for an adult patient with bacterial pneumonia,
based on knowledge of the bacteria that commonly cause pneumonia.
Which public health factor should the physician consider when selecting the antibiotic for
this patient? - CORRECT ANSWER-A review of practice medical records for similarly
affected patients reveals that azithromycin has been 90% successful for the treatment of
pneumonia.
A litter of kittens arrives at an animal shelter, and the kittens have various multifocal, raised,
minimally haired skin lesions. The attending veterinarian believes these lesions are
suggestive of ringworm.
What can the veterinarian do to prevent an outbreak of ringworm among cats in the shelter?
- CORRECT ANSWER-Isolate the kittens from other animals because dogs and cats are
susceptible to ringworm
The Environmental Protection Agency (EPA) guidelines on disinfection state a specific
number of bacteria must be reduced in less than 10 minutes for a company to claim that its
chemical solution is a disinfectant.
How can a 1:10 dilution of bleach solution be used for disinfection if only undiluted bleach
meets the EPA's guidelines? - CORRECT ANSWER-Allow diluted bleach to contact
clean, contaminated surfaces for more than 10 minutes
An outbreak of canine infectious respiratory disease (CIRD) occurred in a dog boarding
facility after a dog that was asymptomatic later developed the disease.
Which strategy will mitigate the risk of a future outbreak of CIRD? - CORRECT
ANSWER-Require dogs to be vaccinated for CIRD pathogens
A physician who has been treating a patient with cephalexin for a skin infection secondary to
uncontrolled diabetes mellitus notes that the infection has worsened over the past 10 days.
The physician orders culture and susceptibility testing.
, A foodborne pathogen is suspected as a cause of acute onset fever and diarrhea in people
after eating one brand of a packaged salad mix.
Which method will mitigate the future risk of product contamination with this pathogen? -
CORRECT ANSWER-Farmers use water sourced only from a city's water supply for field
irrigation
Approximately 40% of people receive the inactivated form of the influenza virus vaccine
annually.
What does this fact imply regarding public health? - CORRECT ANSWER-The value of
influenza virus vaccination for everyone could be better communicated to the public.
The label for one of the influenza virus vaccines states that the vaccine is "indicated for
active immunization for the prevention of disease caused by influenza A subtype viruses and
type B viruses contained in the vaccine" (U.S. Food and Drug Administration).
Which impact can this have on public health? - CORRECT ANSWER-The vaccine will
protect vaccinated people from an influenza virus that undergoes antigenic drift.
Which statement describes eukaryotic cells? - CORRECT ANSWER-The nuclei of
eukaryotic cells are surrounded by complex nuclear membranes.
Which statement describes eukaryotic flagella? - CORRECT ANSWER-Eukaryotic flagella
are flexible, whip-like structures.
Which statement describes the endomembrane system? - CORRECT ANSWER-It
includes the Golgi apparatus, lysosomes, and vesicles.
ASSESMENT 200 QUESTIONS AND CORRECT
ANSWERS WITH COMPLETE SOLUTIONS | 100%
PASS RATE | GRADED A+ | NEW UPDATE 2026/2027.
What is a characteristic of rhizospheres? - CORRECT ANSWER-The rhizosphere is where
plants release organic compounds that can be metabolized by microbes into soil.
Which type of immunity is generated from vaccination? - CORRECT ANSWERArtificially
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.
Which vaccine was the first to provide immunity, paving the way for the subsequent
vaccination campaigns? - CORRECT ANSWER-Smallpox
A patient developed peritonitis (infection of the abdominal cavity) after intestinal surgery.
The attending physician suspects a nosocomial infection as the cause. - CORRECT
ANSWER-Adhere to surgical suite cleaning and disinfection protocols
Which pathogen does this physician suspect? - CORRECT ANSWER-Methicillin-resistant
Staphylococcus aureus
,A physician selects the antibiotic azithromycin for an adult patient with bacterial pneumonia,
based on knowledge of the bacteria that commonly cause pneumonia.
Which public health factor should the physician consider when selecting the antibiotic for
this patient? - CORRECT ANSWER-A review of practice medical records for similarly
affected patients reveals that azithromycin has been 90% successful for the treatment of
pneumonia.
A litter of kittens arrives at an animal shelter, and the kittens have various multifocal, raised,
minimally haired skin lesions. The attending veterinarian believes these lesions are
suggestive of ringworm.
What can the veterinarian do to prevent an outbreak of ringworm among cats in the shelter?
- CORRECT ANSWER-Isolate the kittens from other animals because dogs and cats are
susceptible to ringworm
The Environmental Protection Agency (EPA) guidelines on disinfection state a specific
number of bacteria must be reduced in less than 10 minutes for a company to claim that its
chemical solution is a disinfectant.
How can a 1:10 dilution of bleach solution be used for disinfection if only undiluted bleach
meets the EPA's guidelines? - CORRECT ANSWER-Allow diluted bleach to contact
clean, contaminated surfaces for more than 10 minutes
An outbreak of canine infectious respiratory disease (CIRD) occurred in a dog boarding
facility after a dog that was asymptomatic later developed the disease.
Which strategy will mitigate the risk of a future outbreak of CIRD? - CORRECT
ANSWER-Require dogs to be vaccinated for CIRD pathogens
A physician who has been treating a patient with cephalexin for a skin infection secondary to
uncontrolled diabetes mellitus notes that the infection has worsened over the past 10 days.
The physician orders culture and susceptibility testing.
, A foodborne pathogen is suspected as a cause of acute onset fever and diarrhea in people
after eating one brand of a packaged salad mix.
Which method will mitigate the future risk of product contamination with this pathogen? -
CORRECT ANSWER-Farmers use water sourced only from a city's water supply for field
irrigation
Approximately 40% of people receive the inactivated form of the influenza virus vaccine
annually.
What does this fact imply regarding public health? - CORRECT ANSWER-The value of
influenza virus vaccination for everyone could be better communicated to the public.
The label for one of the influenza virus vaccines states that the vaccine is "indicated for
active immunization for the prevention of disease caused by influenza A subtype viruses and
type B viruses contained in the vaccine" (U.S. Food and Drug Administration).
Which impact can this have on public health? - CORRECT ANSWER-The vaccine will
protect vaccinated people from an influenza virus that undergoes antigenic drift.
Which statement describes eukaryotic cells? - CORRECT ANSWER-The nuclei of
eukaryotic cells are surrounded by complex nuclear membranes.
Which statement describes eukaryotic flagella? - CORRECT ANSWER-Eukaryotic flagella
are flexible, whip-like structures.
Which statement describes the endomembrane system? - CORRECT ANSWER-It
includes the Golgi apparatus, lysosomes, and vesicles.
