WGU D311 Microbiology 2024 study for OA Exam
with Latest Update Questions and 100% Correct
Answers
What differentiates signs from symptoms of disease? - ✔✔Signs are measurable; symptoms
are subjective.
Which procedure does a clinician use to measure a symptom? - ✔✔Asking patients to rate
pain on a numerical scale
During which stage of an infection does a patient feel the worst? - ✔✔The period of illness
stage
What defines the end of the incubation period for an infectious disease? - ✔✔The
appearance of nonspecific signs or symptoms of disease
How does the epidermis help prevent infection and disease? - ✔✔It provides a harsh
environment for most pathogens and periodically sheds
How does the complement system contribute to the innate immune response? - ✔✔It is
composed of proteins that can be activated by the presence of pathogens to form the
membrane attack complex (MAC).
Why are antimicrobial peptides (AMPs) considered an innate immune function? - ✔✔AMPs
are produced both routinely and as a response to pathogens.
Which terms refer to monocytes when they differentiate into tissue-specific phagocytes? -
✔✔Macrophages and dendritic cells
,What is specifically being reported if the Centers for Disease Control and Prevention reports
10,000 new cases of COVID-19? - ✔✔Incidence
What is the difference between prevalence and incidence? - ✔✔Prevalence refers to the
total number of infections; incidence refers only to new cases.
Which term refers to a disease that occurs on a worldwide scale at a given time? -
✔✔Pandemic
Why are etiologic agents significant to epidemiologists? - ✔✔Etiologic agents are the
pathogens that cause disease.
Which kind of diseases must be reported to the Centers for Disease Control and Prevention in
order to prevent future pandemics? - ✔✔Notifiable diseases
How does the Centers for Disease Control and Prevention (CDC) obtain the latest data on
typical illnesses to publish in the Morbidity and Mortality Weekly Report (MMWR)? -
✔✔Through mandatory reporting of notifiable disease cases by healthcare providers
What can cause an infectious disease to become a reemerging disease? - ✔✔The responsible
pathogen becomes drug resistant.
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.
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