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