D311: WGU Microbiology with
Lab: PA QUESTIONS AND
VERIFIED CORRECT
ANSWERS GRADED A+
[LATEST 2026-2027] 100%
GUARANTEED
PASS
Which staining technique can be used to identify these microorganisms? - CORRECT ANSWER-
Endospore staining
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 student see upon microscopic examination of the slide? - CORRECT ANSWER-Pink
vegetative cells with clear round areas.
A physician is given a vaginal swab in order to test for post-antibiotic vaginal infection.
Which microscopic technique would identify opportunistic fungal pathogen? - CORRECT
ANSWER-Wet mount stain
A technician has just performed a Gram stain but forgot to add the safranin.
What is the likely result of this when viewed microscopically? - CORRECT ANSWER-Gram-
negative organisms can not be seen under the microscope.
, Which characteristic of mycobacterium makes a Gram stain unsuitable? - CORRECT ANSWER-
The cell wall has a waxy lipid.
Which feature of infection indicates the presence of a primary pathogen rather than an
opportunistic pathogen? - CORRECT ANSWER-Patients with healthy immune systems.
After oral antibiotic therapy, a patient is diagnosed with vaginitis.
What type of microbe could be causing this opportunistic infection? - CORRECT ANSWER-
Fungus
What type of microbe is used to deliver gene therapies to human cells? - CORRECT ANSWER-
Virus
What type of diseases are found in higher numbers than expected in local populations? -
CORRECT ANSWER-Epidemic
Which describes a mutualistic relationship? - CORRECT ANSWER-Ruminococcus species using
nutrients from a cow's diet to digest plant cellulose in the rumen.
Why are photosynthetic bacteria and algae important to the carbon cycle on Earth? - CORRECT
ANSWER-Photosynthetic microbes metabolize carbon dioxide, fix carbon, and produce oxygen.
What microbial process is used by bacteria and fungi to produce many common food products,
such as soy sauce, bread, and yogurt? - CORRECT ANSWER-Fermantation
Which beneficial role do viruses have in the environment? - CORRECT ANSWER-Integrating into
plant genomes to increase drought tolerance.
Lab: PA QUESTIONS AND
VERIFIED CORRECT
ANSWERS GRADED A+
[LATEST 2026-2027] 100%
GUARANTEED
PASS
Which staining technique can be used to identify these microorganisms? - CORRECT ANSWER-
Endospore staining
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 student see upon microscopic examination of the slide? - CORRECT ANSWER-Pink
vegetative cells with clear round areas.
A physician is given a vaginal swab in order to test for post-antibiotic vaginal infection.
Which microscopic technique would identify opportunistic fungal pathogen? - CORRECT
ANSWER-Wet mount stain
A technician has just performed a Gram stain but forgot to add the safranin.
What is the likely result of this when viewed microscopically? - CORRECT ANSWER-Gram-
negative organisms can not be seen under the microscope.
, Which characteristic of mycobacterium makes a Gram stain unsuitable? - CORRECT ANSWER-
The cell wall has a waxy lipid.
Which feature of infection indicates the presence of a primary pathogen rather than an
opportunistic pathogen? - CORRECT ANSWER-Patients with healthy immune systems.
After oral antibiotic therapy, a patient is diagnosed with vaginitis.
What type of microbe could be causing this opportunistic infection? - CORRECT ANSWER-
Fungus
What type of microbe is used to deliver gene therapies to human cells? - CORRECT ANSWER-
Virus
What type of diseases are found in higher numbers than expected in local populations? -
CORRECT ANSWER-Epidemic
Which describes a mutualistic relationship? - CORRECT ANSWER-Ruminococcus species using
nutrients from a cow's diet to digest plant cellulose in the rumen.
Why are photosynthetic bacteria and algae important to the carbon cycle on Earth? - CORRECT
ANSWER-Photosynthetic microbes metabolize carbon dioxide, fix carbon, and produce oxygen.
What microbial process is used by bacteria and fungi to produce many common food products,
such as soy sauce, bread, and yogurt? - CORRECT ANSWER-Fermantation
Which beneficial role do viruses have in the environment? - CORRECT ANSWER-Integrating into
plant genomes to increase drought tolerance.
