WGU D311 Microbiology Exam
Questions And Answers (2024) Graded
A+
Which vaccine type has the advantages of producing long-lasting cellular and
humoral immunity and allowing transmission to contacts? Answer- live attenuated
Broad-spectrum antibiotics disrupt the microbiome and provide an opportunity for
pathogens such as Clostridium difficile to grow and cause infection. How can the
microbiome be quickly reestablished to prevent a Clostridium difficile infection?
Answer- fecal transplant
When would it be best to treat a patient with a narrow-spectrum antimicrobial rather
than a broad-spectrum antimicrobial? Answer- when the infectious agent has been
identified as a gram-negative bacterium
Which outcome is a direct result of the increased "leakiness" of capillaries during
inflammation? Answer- edema
Which describes a mutualistic relationship? Answer- Ruminococcus species using
nutrients from a cow's diet to digest plant cellulose in the rumen
Which viral virulence factor requires adjustments to the influenza vaccine annually?
Answer- antigenic variation
A bacterial pathogen is found growing in the bloodstream of a patient. Which
diagnosis is correct for this finding? Answer- septicemia
Why is desiccation or dehydration an effective method of microbial control? Answer-
Water concentration decreases below what is required for microbial survival
Which virulence factor produced by Pesudomonas aeruginosa gives off a fruity
odor? Answer- pyocyanin
A dental hygienist nicked the gum of the patient during a routine cleaning. A mild
infection of the gum was followed 10 days alter with acute bacterial endocarditis.
Which type of infection caused the endocarditis? Answer- a focal infection
A student in a lab has just completed an endospore stain of Bacillus anthracis and
realized that heat was not applied during the staining technique. What will the
Questions And Answers (2024) Graded
A+
Which vaccine type has the advantages of producing long-lasting cellular and
humoral immunity and allowing transmission to contacts? Answer- live attenuated
Broad-spectrum antibiotics disrupt the microbiome and provide an opportunity for
pathogens such as Clostridium difficile to grow and cause infection. How can the
microbiome be quickly reestablished to prevent a Clostridium difficile infection?
Answer- fecal transplant
When would it be best to treat a patient with a narrow-spectrum antimicrobial rather
than a broad-spectrum antimicrobial? Answer- when the infectious agent has been
identified as a gram-negative bacterium
Which outcome is a direct result of the increased "leakiness" of capillaries during
inflammation? Answer- edema
Which describes a mutualistic relationship? Answer- Ruminococcus species using
nutrients from a cow's diet to digest plant cellulose in the rumen
Which viral virulence factor requires adjustments to the influenza vaccine annually?
Answer- antigenic variation
A bacterial pathogen is found growing in the bloodstream of a patient. Which
diagnosis is correct for this finding? Answer- septicemia
Why is desiccation or dehydration an effective method of microbial control? Answer-
Water concentration decreases below what is required for microbial survival
Which virulence factor produced by Pesudomonas aeruginosa gives off a fruity
odor? Answer- pyocyanin
A dental hygienist nicked the gum of the patient during a routine cleaning. A mild
infection of the gum was followed 10 days alter with acute bacterial endocarditis.
Which type of infection caused the endocarditis? Answer- a focal infection
A student in a lab has just completed an endospore stain of Bacillus anthracis and
realized that heat was not applied during the staining technique. What will the
