WGU D311 Microbiology 2024 study for OA ALL CURRENTLY TESTING AND
FREQUENTLY TESTED EXAM NEWEST QUESTIONS AND CORRECT DETAILED
ANSWERS WITH A STUDY GUIDE | EXPERT VERIFIED FOR GUARANTEED PASS |
LATEST UPDATE 2025-2026GRADED A+
What does the World Health Organization (WHO) do to prevent future
pandemics?
The WHO maintains a global alert and response system from data from multiple
countries.
A patient taking the antibiotic cephalexin for a urinary tract infection
developed severe diarrhea two days after completing the five-day course of
treatment.
What is an explanation for the development of this patient's diarrhea?
Cephalexin disrupted the normal intestinal microbiome.
Store-bought, packaged soil used to promote rapid plant growth was
accidentally irradiated, thus killing the bacteria that had been in the soil.
Which impact would this have on farmers?
Plants would die due to a lack of absorbable forms of nitrogen and phosphorus.
A hospital infection preventionist has instituted a policy to prevent nosocomial
infections.
Which guideline is an effective component of this policy?
Healthcare personnel must wear personal protective equipment at all times.
A family and its dog were hiking and swimming in the woods. Two days later,
each family member developed a large bull's-eye lesion on their arm, and the
dog became anorexic and lethargic.
Which control measure will be helpful to prevent the development of a future
infection caused by the same microorganism?
The family immediately checks themselves and the dog for ticks after returning
home.
A veterinarian diagnoses a dog with a zoonotic bacterial infection.
Which precautions should the veterinarian advise for the caretaker?
Wash hands after touching the dog
,Viral epidemics concern public health department officials because some
infected people do not show signs or symptoms of infection, whereas others
have prolonged prodromal periods.
What should public health officials do to minimize these causes for concern?
Test people who are asymptomatic
A contagious respiratory feline virus may reactivate a latent infection months
to years after an initial infection.
Which implication does this have for the management of cats in animal
shelters?
Cats entering the shelter should be isolated from other sheltered cats.
Two spouses present to the emergency department because of difficulty
swallowing, facial weakness on both sides of the face, and trouble breathing
after consumption of spaghetti sauce made from canned tomatoes. The
physician is aware of reports of similarly affected patients in nearby
communities.
What should be the physician's next step after treating these patients?
Contact the state department of public health
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
Which environment would contain microbes that are psychrophilic?
Glaciers
What is the role of nematodes in soil?
They photosynthesize and fix nitrogen.
Which eukaryote is responsible for producing antibiotics to ward off bacterial
competitors?
Fungi
Which symbiotic relationship is an example of mutualism?
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?
Mutualism
, Which description of resident microbiota is true?
Resident microbiota constantly live on the human body.
Which relationship is exhibited by intestinal Escherichia coli and their human
host?
Mutualism
Which type of disease is transmitted from animals to humans?
Zoonotic diseases
Which type of disease is acquired in hospital settings?
Nosocomial diseases
Which portal of exit can expel the most viral particles?
Respiratory
Which type of disease is sickle cell anemia?
Noninfectious
Which type of transmission occurs when tuberculosis is spread through small
particles expelled by a cough?
Droplet transmission
Which type of transmission occurs when pathogens are spread from mother to
child during breastfeeding?
Vertical direct contact transmission
Which type of transmission occurs when an arthropod carries a viral pathogen
inside of its body?
Biological vector transmission
Which type of transmission occurs through contact with a fomite?
Indirect contact transmission
Which infected host would be considered a passive carrier?
A healthcare professional who does not wash their hands after seeing an infected
patient
How is Giardia lamblia, the causative agent of giardiasis, transmitted?
Contaminated food or water
Which organism is the definitive host of Toxoplasma gondii?
Birds
Which disease is transmitted by animals but not arthropods?
Rabies
How can adhesins be described?
FREQUENTLY TESTED EXAM NEWEST QUESTIONS AND CORRECT DETAILED
ANSWERS WITH A STUDY GUIDE | EXPERT VERIFIED FOR GUARANTEED PASS |
LATEST UPDATE 2025-2026GRADED A+
What does the World Health Organization (WHO) do to prevent future
pandemics?
The WHO maintains a global alert and response system from data from multiple
countries.
A patient taking the antibiotic cephalexin for a urinary tract infection
developed severe diarrhea two days after completing the five-day course of
treatment.
What is an explanation for the development of this patient's diarrhea?
Cephalexin disrupted the normal intestinal microbiome.
Store-bought, packaged soil used to promote rapid plant growth was
accidentally irradiated, thus killing the bacteria that had been in the soil.
Which impact would this have on farmers?
Plants would die due to a lack of absorbable forms of nitrogen and phosphorus.
A hospital infection preventionist has instituted a policy to prevent nosocomial
infections.
Which guideline is an effective component of this policy?
Healthcare personnel must wear personal protective equipment at all times.
A family and its dog were hiking and swimming in the woods. Two days later,
each family member developed a large bull's-eye lesion on their arm, and the
dog became anorexic and lethargic.
Which control measure will be helpful to prevent the development of a future
infection caused by the same microorganism?
The family immediately checks themselves and the dog for ticks after returning
home.
A veterinarian diagnoses a dog with a zoonotic bacterial infection.
Which precautions should the veterinarian advise for the caretaker?
Wash hands after touching the dog
,Viral epidemics concern public health department officials because some
infected people do not show signs or symptoms of infection, whereas others
have prolonged prodromal periods.
What should public health officials do to minimize these causes for concern?
Test people who are asymptomatic
A contagious respiratory feline virus may reactivate a latent infection months
to years after an initial infection.
Which implication does this have for the management of cats in animal
shelters?
Cats entering the shelter should be isolated from other sheltered cats.
Two spouses present to the emergency department because of difficulty
swallowing, facial weakness on both sides of the face, and trouble breathing
after consumption of spaghetti sauce made from canned tomatoes. The
physician is aware of reports of similarly affected patients in nearby
communities.
What should be the physician's next step after treating these patients?
Contact the state department of public health
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
Which environment would contain microbes that are psychrophilic?
Glaciers
What is the role of nematodes in soil?
They photosynthesize and fix nitrogen.
Which eukaryote is responsible for producing antibiotics to ward off bacterial
competitors?
Fungi
Which symbiotic relationship is an example of mutualism?
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?
Mutualism
, Which description of resident microbiota is true?
Resident microbiota constantly live on the human body.
Which relationship is exhibited by intestinal Escherichia coli and their human
host?
Mutualism
Which type of disease is transmitted from animals to humans?
Zoonotic diseases
Which type of disease is acquired in hospital settings?
Nosocomial diseases
Which portal of exit can expel the most viral particles?
Respiratory
Which type of disease is sickle cell anemia?
Noninfectious
Which type of transmission occurs when tuberculosis is spread through small
particles expelled by a cough?
Droplet transmission
Which type of transmission occurs when pathogens are spread from mother to
child during breastfeeding?
Vertical direct contact transmission
Which type of transmission occurs when an arthropod carries a viral pathogen
inside of its body?
Biological vector transmission
Which type of transmission occurs through contact with a fomite?
Indirect contact transmission
Which infected host would be considered a passive carrier?
A healthcare professional who does not wash their hands after seeing an infected
patient
How is Giardia lamblia, the causative agent of giardiasis, transmitted?
Contaminated food or water
Which organism is the definitive host of Toxoplasma gondii?
Birds
Which disease is transmitted by animals but not arthropods?
Rabies
How can adhesins be described?
