D311 Microbiology OA Exam Latest 2026 Updated
Questions and Verified 100% Solutions (2026/2027)
Grade: A+|Status: Guaranteed Pass| Vaccines,
Pathogens, Staining, Immunity | WGU
A patient Is determined to have contracted Lyme disease after being bit by an infected tick.
What type of transmission is described in this scenario? - Answers -Vector transmission is
described in this scenario.
Which is a description of vehicle transmission? - Answers -A person drinks untreated water on
vacation and later has diarrhea and nausea is a description of vehicle transmission.
Which organism type contains species that perform adhesion through the unique use of its
flagella to move out fluid from under a large adhesive disc, resulting in lower pressure to adhere
to the intestinal lining? - Answers -Protozoa
A patient presents to the emergency department with high fever. difficulty breathing. vomiting,
coughing up blood. and severe chest pain when inhaling. Which pathogen would the provider
suspect? - Answers -Bacillus anthracis
Which activity of the complement system would be useful against an infection caused by a
gram-negative bacterium? - Answers -Membrane attack complex
1|Page
, Which body system is protected by the ciliary escalator? - Answers -Respiratory
What is the role of global public health organizations in eradication of diseases, like polio? -
Answers -Organize vaccination campaigns and programs
Malaria cases are routinely found in certain areas of the world but are not seen In other areas.
How would malaria be described in those areas where it is found? - Answers -Endemic
A hospital notices an increase in patients being admitted with gastrointestinal symptoms and
dehydration over a two-week period. An epidemiological analysis reveals that the cause is the
same pathogen, but that none of the hospitalized individuals were ever in the same location at
the same time. What is an explanation for this analysis? - Answers -These individuals all
consumed contaminated food from a common manufacturing source.
Which action is an innate physical defense? - Answers -Mucous secretions trapping and
removing microbes from the respiratory tract.
Which vaccine type would be effective against an organism that can produce a capsule? -
Answers -Conjugate
Vhich protocol for microbial growth control leaves the least number of living cells? - Answers -
Sterilization
2|Page
Questions and Verified 100% Solutions (2026/2027)
Grade: A+|Status: Guaranteed Pass| Vaccines,
Pathogens, Staining, Immunity | WGU
A patient Is determined to have contracted Lyme disease after being bit by an infected tick.
What type of transmission is described in this scenario? - Answers -Vector transmission is
described in this scenario.
Which is a description of vehicle transmission? - Answers -A person drinks untreated water on
vacation and later has diarrhea and nausea is a description of vehicle transmission.
Which organism type contains species that perform adhesion through the unique use of its
flagella to move out fluid from under a large adhesive disc, resulting in lower pressure to adhere
to the intestinal lining? - Answers -Protozoa
A patient presents to the emergency department with high fever. difficulty breathing. vomiting,
coughing up blood. and severe chest pain when inhaling. Which pathogen would the provider
suspect? - Answers -Bacillus anthracis
Which activity of the complement system would be useful against an infection caused by a
gram-negative bacterium? - Answers -Membrane attack complex
1|Page
, Which body system is protected by the ciliary escalator? - Answers -Respiratory
What is the role of global public health organizations in eradication of diseases, like polio? -
Answers -Organize vaccination campaigns and programs
Malaria cases are routinely found in certain areas of the world but are not seen In other areas.
How would malaria be described in those areas where it is found? - Answers -Endemic
A hospital notices an increase in patients being admitted with gastrointestinal symptoms and
dehydration over a two-week period. An epidemiological analysis reveals that the cause is the
same pathogen, but that none of the hospitalized individuals were ever in the same location at
the same time. What is an explanation for this analysis? - Answers -These individuals all
consumed contaminated food from a common manufacturing source.
Which action is an innate physical defense? - Answers -Mucous secretions trapping and
removing microbes from the respiratory tract.
Which vaccine type would be effective against an organism that can produce a capsule? -
Answers -Conjugate
Vhich protocol for microbial growth control leaves the least number of living cells? - Answers -
Sterilization
2|Page
