1|Page
WGU D311 OA Final Exam Version 2 / WGU D311
Microbiology Objective Assessment Final Exam
Newest 2025/2026 Actual Exam Complete 200
Questions And Correct Detailed Answers (Verified
Answers) |Already Graded A+||Latest Exam Version!!!
What is the significance of microorganisms containing a
thick coat of peptldogiywn within the cell wall? - Answer-
Microorganisms containing a thick coat of peptidoglycan
within the cell wall are typically classified as gram-positive
bacteria.
Why are viruses considered aceilular? - Answer-They
cannot reproduce without a host.
What is the defining characteristic of eukaryotes? -
Answer-They have a nucleus.
Which microorganism can cause vaginal yeast Infections
and oral thrush? - Answer-Fungi
,2|Page
Why can It be difficult to determine the etiologic agent of a
disease? - Answer-Some signs and symptoms can be
caused by many different etiologic agents.
What kind of staining technique Is the acid-fast stain? -
Answer-
A doctor prescribed antibiotics for a patient complaining of
runny nose. fever. and aches and pains. Which type of
infection did the doctor suspect? - Answer-The doctor
likely suspected a viral infection because antibiotics are
not effective against viral infections.
A healthcare professional is treating a patient who
developed a yeast infection after taking antibiotics. What
type of medication should be prescribed to this patient? -
Answer-Antifungals
Which structure promotes motility in Proteus. Shigelia. and
Salmonella species. all of which can cause serious
disease in humans? - Answer-Presence of flagella
, 3|Page
Which bacterial virulence factor allows a strain to resist
phagocytosis, increasing the organism's virulence? -
Answer-Capsule production
Why is treating Haemophilus influenzae difficult? - Answer-
The capsule is antiphagocytic.
How do pili aid pathogens in causing disease? - Answer-
They cause pathogens to adhere to host cells.
Which virulence factor allows pathogens to penetrate the
dermis and invade the body? - Answer-Bacterial enzymes
A bacterium from a deep-sea hydrothermal vent has been
cultured. Which staining technique should be used to
begin the process of species identification? - Answer-
Gram staining
What does the presence of a clear area around a cell
stained with India ink indicate about the cell? - Answer-
The cell has a capsule.
WGU D311 OA Final Exam Version 2 / WGU D311
Microbiology Objective Assessment Final Exam
Newest 2025/2026 Actual Exam Complete 200
Questions And Correct Detailed Answers (Verified
Answers) |Already Graded A+||Latest Exam Version!!!
What is the significance of microorganisms containing a
thick coat of peptldogiywn within the cell wall? - Answer-
Microorganisms containing a thick coat of peptidoglycan
within the cell wall are typically classified as gram-positive
bacteria.
Why are viruses considered aceilular? - Answer-They
cannot reproduce without a host.
What is the defining characteristic of eukaryotes? -
Answer-They have a nucleus.
Which microorganism can cause vaginal yeast Infections
and oral thrush? - Answer-Fungi
,2|Page
Why can It be difficult to determine the etiologic agent of a
disease? - Answer-Some signs and symptoms can be
caused by many different etiologic agents.
What kind of staining technique Is the acid-fast stain? -
Answer-
A doctor prescribed antibiotics for a patient complaining of
runny nose. fever. and aches and pains. Which type of
infection did the doctor suspect? - Answer-The doctor
likely suspected a viral infection because antibiotics are
not effective against viral infections.
A healthcare professional is treating a patient who
developed a yeast infection after taking antibiotics. What
type of medication should be prescribed to this patient? -
Answer-Antifungals
Which structure promotes motility in Proteus. Shigelia. and
Salmonella species. all of which can cause serious
disease in humans? - Answer-Presence of flagella
, 3|Page
Which bacterial virulence factor allows a strain to resist
phagocytosis, increasing the organism's virulence? -
Answer-Capsule production
Why is treating Haemophilus influenzae difficult? - Answer-
The capsule is antiphagocytic.
How do pili aid pathogens in causing disease? - Answer-
They cause pathogens to adhere to host cells.
Which virulence factor allows pathogens to penetrate the
dermis and invade the body? - Answer-Bacterial enzymes
A bacterium from a deep-sea hydrothermal vent has been
cultured. Which staining technique should be used to
begin the process of species identification? - Answer-
Gram staining
What does the presence of a clear area around a cell
stained with India ink indicate about the cell? - Answer-
The cell has a capsule.
