WGU D311: MICROBIOLOGY 2026 STUDY FOR OA EXAM WITH
COMPLETE QUESTIONS AND CORRECT ANSWERS | NEW UPDATE
2026/2027 | GRADED A+ | 100% GUARANTEED PASS!!!
Which type of disease is transmitted from animals to humans? - CORRECT
ANSWER-Zoonotic diseases
Which type of disease is acquired in hospital settings? - CORRECT
ANSWERNosocomial diseases
Which type of disease is sickle cell anemia? - CORRECT ANSWER-Noninfectious
Which type of transmission occurs when tuberculosis is spread through small
particles expelled by a cough? - CORRECT ANSWER-Droplet transmission
Which type of transmission occurs when pathogens are spread from mother to
child during breastfeeding? - CORRECT ANSWER-Vertical direct contact
transmission
Which type of transmission occurs when an arthropod carries a viral pathogen
inside of its body? - CORRECT ANSWER-Biological vector transmission Which
,type of transmission occurs through contact with a fomite? - CORRECT
ANSWER-Indirect contact transmission
Which portal of exit can expel the most viral particles? - CORRECT
ANSWERRespiratory
Which infected host would be considered a passive carrier? - CORRECT
ANSWER-A healthcare professional who does not wash their hands after seeing
an infected patient
Which environment would contain microbes that are psychrophilic? - CORRECT
ANSWER-Glaciers
What is the role of nematodes in soil? - CORRECT ANSWER-They
photosynthesize and fix nitrogen.
Which eukaryote is responsible for producing antibiotics to ward off bacterial
competitors? - CORRECT ANSWER-Fungi
,Which relationship is exhibited by intestinal Escherichia coli and their human host?
- CORRECT ANSWER-Mutualism
Which organism is the definitive host of Toxoplasma gondii? - CORRECT
ANSWER-Birds
Which disease is transmitted by animals but not arthropods? - CORRECT
ANSWER-Rabies
How is Giardia lamblia, the causative agent of giardiasis, transmitted? - CORRECT
ANSWER-Contaminated food or water
What is a characteristic of rhizospheres? - CORRECT ANSWER-The rhizosphere
is where plants release organic compounds that can be metabolized by microbes
into soil.
How can adhesins be described? - CORRECT ANSWER-Adhesins found on the
surface of pathogens bind to receptors of host cells.
Which description indicates a portal of entry? - CORRECT ANSWER-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 ANSWER-It prevents the exposure of pathogens to lethal digestive
enzymes.
Which action refers to a secondary infection? - CORRECT ANSWER-An infection
by one pathogen enables another pathogen to cause an infection.
Which symbiotic relationship is an example of mutualism? - CORRECT
ANSWERThe 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 ANSWER-Mutualism
Which procedure does a clinician use to measure a symptom? - CORRECT
ANSWER-Asking patients to rate pain on a numerical scale
How does the epidermis help prevent infection and disease? - CORRECT
ANSWER-It provides a harsh environment for most pathogens and periodically
sheds
COMPLETE QUESTIONS AND CORRECT ANSWERS | NEW UPDATE
2026/2027 | GRADED A+ | 100% GUARANTEED PASS!!!
Which type of disease is transmitted from animals to humans? - CORRECT
ANSWER-Zoonotic diseases
Which type of disease is acquired in hospital settings? - CORRECT
ANSWERNosocomial diseases
Which type of disease is sickle cell anemia? - CORRECT ANSWER-Noninfectious
Which type of transmission occurs when tuberculosis is spread through small
particles expelled by a cough? - CORRECT ANSWER-Droplet transmission
Which type of transmission occurs when pathogens are spread from mother to
child during breastfeeding? - CORRECT ANSWER-Vertical direct contact
transmission
Which type of transmission occurs when an arthropod carries a viral pathogen
inside of its body? - CORRECT ANSWER-Biological vector transmission Which
,type of transmission occurs through contact with a fomite? - CORRECT
ANSWER-Indirect contact transmission
Which portal of exit can expel the most viral particles? - CORRECT
ANSWERRespiratory
Which infected host would be considered a passive carrier? - CORRECT
ANSWER-A healthcare professional who does not wash their hands after seeing
an infected patient
Which environment would contain microbes that are psychrophilic? - CORRECT
ANSWER-Glaciers
What is the role of nematodes in soil? - CORRECT ANSWER-They
photosynthesize and fix nitrogen.
Which eukaryote is responsible for producing antibiotics to ward off bacterial
competitors? - CORRECT ANSWER-Fungi
,Which relationship is exhibited by intestinal Escherichia coli and their human host?
- CORRECT ANSWER-Mutualism
Which organism is the definitive host of Toxoplasma gondii? - CORRECT
ANSWER-Birds
Which disease is transmitted by animals but not arthropods? - CORRECT
ANSWER-Rabies
How is Giardia lamblia, the causative agent of giardiasis, transmitted? - CORRECT
ANSWER-Contaminated food or water
What is a characteristic of rhizospheres? - CORRECT ANSWER-The rhizosphere
is where plants release organic compounds that can be metabolized by microbes
into soil.
How can adhesins be described? - CORRECT ANSWER-Adhesins found on the
surface of pathogens bind to receptors of host cells.
Which description indicates a portal of entry? - CORRECT ANSWER-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 ANSWER-It prevents the exposure of pathogens to lethal digestive
enzymes.
Which action refers to a secondary infection? - CORRECT ANSWER-An infection
by one pathogen enables another pathogen to cause an infection.
Which symbiotic relationship is an example of mutualism? - CORRECT
ANSWERThe 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 ANSWER-Mutualism
Which procedure does a clinician use to measure a symptom? - CORRECT
ANSWER-Asking patients to rate pain on a numerical scale
How does the epidermis help prevent infection and disease? - CORRECT
ANSWER-It provides a harsh environment for most pathogens and periodically
sheds
