WGU D311 Microbiology 2024 Questions
and Answers Guide (already passed)
Latest 2025
What is a characteristic of rhizospheres? - Correct Answers
✅The rhizosphere is where plants release organic
compounds that can be metabolized by microbes into soil.
Which environment would contain microbes that are
psychrophilic? - Correct Answers ✅Glaciers
What is the role of nematodes in soil? - Correct Answers
✅They photosynthesize and fix nitrogen.
Which eukaryote is responsible for producing antibiotics to
ward off bacterial competitors? - Correct Answers ✅Fungi
Which symbiotic relationship is an example of mutualism? -
Correct Answers ✅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? -
Correct Answers ✅Mutualism
Which description of resident microbiota is true? - Correct
Answers ✅Resident microbiota constantly live on the
human body.
,WGU D311 Microbiology 2024 Questions
and Answers Guide (already passed)
Latest 2025
Which relationship is exhibited by intestinal Escherichia coli
and their human host? - Correct Answers ✅Mutualism
Which type of disease is transmitted from animals to
humans? - Correct Answers ✅Zoonotic diseases
Which type of disease is acquired in hospital settings? -
Correct Answers ✅Nosocomial diseases
Which portal of exit can expel the most viral particles? -
Correct Answers ✅Respiratory
Which type of disease is sickle cell anemia? - Correct
Answers ✅Noninfectious
Which type of transmission occurs when tuberculosis is
spread through small particles expelled by a cough? -
Correct Answers ✅Droplet transmission
Which type of transmission occurs when pathogens are
spread from mother to child during breastfeeding? - Correct
Answers ✅Vertical direct contact transmission
,WGU D311 Microbiology 2024 Questions
and Answers Guide (already passed)
Latest 2025
Which type of transmission occurs when an arthropod carries
a viral pathogen inside of its body? - Correct Answers
✅Biological vector transmission
Which type of transmission occurs through contact with a
fomite? - Correct Answers ✅Indirect contact transmission
Which infected host would be considered a passive carrier? -
Correct Answers ✅A healthcare professional who does not
wash their hands after seeing an infected patient
How is Giardia lamblia, the causative agent of giardiasis,
transmitted? - Correct Answers ✅Contaminated food or
water
Which organism is the definitive host of Toxoplasma gondii? -
Correct Answers ✅Birds
Which disease is transmitted by animals but not arthropods? -
Correct Answers ✅Rabies
How can adhesins be described? - Correct Answers
✅Adhesins found on the surface of pathogens bind to
receptors of host cells.
, WGU D311 Microbiology 2024 Questions
and Answers Guide (already passed)
Latest 2025
Which description indicates a portal of entry? - Correct
Answers ✅Body features through which pathogens can
enter host tissue
Pathogens produce proteins to prevent the fusion of the
phagosome and the lysosome (phagolysosome).Why does
this virulence factor facilitate invasion? - Correct Answers
✅It prevents the exposure of pathogens to lethal digestive
enzymes.
Which action refers to a secondary infection? - Correct
Answers ✅An infection by one pathogen enables another
pathogen to cause an infection.
What differentiates signs from symptoms of disease? -
Correct Answers ✅Signs are measurable; symptoms are
subjective.
Which procedure does a clinician use to measure a symptom?
- Correct Answers ✅Asking patients to rate pain on a
numerical scale
During which stage of an infection does a patient feel the
worst? - Correct Answers ✅The period of illness stage
and Answers Guide (already passed)
Latest 2025
What is a characteristic of rhizospheres? - Correct Answers
✅The rhizosphere is where plants release organic
compounds that can be metabolized by microbes into soil.
Which environment would contain microbes that are
psychrophilic? - Correct Answers ✅Glaciers
What is the role of nematodes in soil? - Correct Answers
✅They photosynthesize and fix nitrogen.
Which eukaryote is responsible for producing antibiotics to
ward off bacterial competitors? - Correct Answers ✅Fungi
Which symbiotic relationship is an example of mutualism? -
Correct Answers ✅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? -
Correct Answers ✅Mutualism
Which description of resident microbiota is true? - Correct
Answers ✅Resident microbiota constantly live on the
human body.
,WGU D311 Microbiology 2024 Questions
and Answers Guide (already passed)
Latest 2025
Which relationship is exhibited by intestinal Escherichia coli
and their human host? - Correct Answers ✅Mutualism
Which type of disease is transmitted from animals to
humans? - Correct Answers ✅Zoonotic diseases
Which type of disease is acquired in hospital settings? -
Correct Answers ✅Nosocomial diseases
Which portal of exit can expel the most viral particles? -
Correct Answers ✅Respiratory
Which type of disease is sickle cell anemia? - Correct
Answers ✅Noninfectious
Which type of transmission occurs when tuberculosis is
spread through small particles expelled by a cough? -
Correct Answers ✅Droplet transmission
Which type of transmission occurs when pathogens are
spread from mother to child during breastfeeding? - Correct
Answers ✅Vertical direct contact transmission
,WGU D311 Microbiology 2024 Questions
and Answers Guide (already passed)
Latest 2025
Which type of transmission occurs when an arthropod carries
a viral pathogen inside of its body? - Correct Answers
✅Biological vector transmission
Which type of transmission occurs through contact with a
fomite? - Correct Answers ✅Indirect contact transmission
Which infected host would be considered a passive carrier? -
Correct Answers ✅A healthcare professional who does not
wash their hands after seeing an infected patient
How is Giardia lamblia, the causative agent of giardiasis,
transmitted? - Correct Answers ✅Contaminated food or
water
Which organism is the definitive host of Toxoplasma gondii? -
Correct Answers ✅Birds
Which disease is transmitted by animals but not arthropods? -
Correct Answers ✅Rabies
How can adhesins be described? - Correct Answers
✅Adhesins found on the surface of pathogens bind to
receptors of host cells.
, WGU D311 Microbiology 2024 Questions
and Answers Guide (already passed)
Latest 2025
Which description indicates a portal of entry? - Correct
Answers ✅Body features through which pathogens can
enter host tissue
Pathogens produce proteins to prevent the fusion of the
phagosome and the lysosome (phagolysosome).Why does
this virulence factor facilitate invasion? - Correct Answers
✅It prevents the exposure of pathogens to lethal digestive
enzymes.
Which action refers to a secondary infection? - Correct
Answers ✅An infection by one pathogen enables another
pathogen to cause an infection.
What differentiates signs from symptoms of disease? -
Correct Answers ✅Signs are measurable; symptoms are
subjective.
Which procedure does a clinician use to measure a symptom?
- Correct Answers ✅Asking patients to rate pain on a
numerical scale
During which stage of an infection does a patient feel the
worst? - Correct Answers ✅The period of illness stage
