1|Page
WGU D311 MICROBIOLOGY OA NEWEST 2025
ACTUAL EXAM| QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED
A+
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
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)...
, 2|Page
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
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
WGU D311 MICROBIOLOGY OA NEWEST 2025
ACTUAL EXAM| QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED
A+
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
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)...
, 2|Page
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
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
