WGU D311 Microbiology || Error-free Answers 100%.
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.
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
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.
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
What defines the end of the incubation period for an infectious disease? correct answers The
appearance of nonspecific signs or symptoms of disease
How does the epidermis help prevent infection and disease? correct answers It provides a harsh
environment for most pathogens and periodically sheds
How does the complement system contribute to the innate immune response? correct answers 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? correct answers
AMPs are produced both routinely and as a response to pathogens.
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.
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
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.
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
What defines the end of the incubation period for an infectious disease? correct answers The
appearance of nonspecific signs or symptoms of disease
How does the epidermis help prevent infection and disease? correct answers It provides a harsh
environment for most pathogens and periodically sheds
How does the complement system contribute to the innate immune response? correct answers 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? correct answers
AMPs are produced both routinely and as a response to pathogens.
