WGU D311 Micro Section 1 Exam Questions and Correct Answers 100% Verified Graded
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What is the significance of microorganisms containing a thick coat of peptldogiywn within the
cell wall? - Microorganisms containing a thick coat of peptidoglycan within the cell wall
are typically classified as gram-positive bacteria.
Why are viruses considered aceilular? - They cannot reproduce without a host.
What is the defining characteristic of eukaryotes? - They have a nucleus.
Which microorganism can cause vaginal yeast Infections and oral thrush? - Fungi
Why can It be difficult to determine the etiologic agent of a disease? - Some signs and
symptoms can be caused by many different etiologic agents.
What kind of staining technique Is the acid-fast stain? -
A doctor prescribed antibiotics for a patient complaining of runny nose. fever. and aches and
pains. Which type of infection did the doctor suspect? - 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? - Antifungals
, Which structure promotes motility in Proteus. Shigelia. and Salmonella species. all of which can
cause serious disease in humans? - Presence of flagella
Which bacterial virulence factor allows a strain to resist phagocytosis, increasing the organism's
virulence? - Capsule production
Why is treating Haemophilus influenzae difficult? - The capsule is antiphagocytic.
How do pili aid pathogens in causing disease? - They cause pathogens to adhere to host
cells.
Which virulence factor allows pathogens to penetrate the dermis and invade the body? -
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? - Gram staining
What does the presence of a clear area around a cell stained with India ink indicate about the
cell? - The cell has a capsule.
How do basic stains work? - The positively charged stain is attracted to the negatively
charged portion of the cell.
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What is the significance of microorganisms containing a thick coat of peptldogiywn within the
cell wall? - Microorganisms containing a thick coat of peptidoglycan within the cell wall
are typically classified as gram-positive bacteria.
Why are viruses considered aceilular? - They cannot reproduce without a host.
What is the defining characteristic of eukaryotes? - They have a nucleus.
Which microorganism can cause vaginal yeast Infections and oral thrush? - Fungi
Why can It be difficult to determine the etiologic agent of a disease? - Some signs and
symptoms can be caused by many different etiologic agents.
What kind of staining technique Is the acid-fast stain? -
A doctor prescribed antibiotics for a patient complaining of runny nose. fever. and aches and
pains. Which type of infection did the doctor suspect? - 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? - Antifungals
, Which structure promotes motility in Proteus. Shigelia. and Salmonella species. all of which can
cause serious disease in humans? - Presence of flagella
Which bacterial virulence factor allows a strain to resist phagocytosis, increasing the organism's
virulence? - Capsule production
Why is treating Haemophilus influenzae difficult? - The capsule is antiphagocytic.
How do pili aid pathogens in causing disease? - They cause pathogens to adhere to host
cells.
Which virulence factor allows pathogens to penetrate the dermis and invade the body? -
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? - Gram staining
What does the presence of a clear area around a cell stained with India ink indicate about the
cell? - The cell has a capsule.
How do basic stains work? - The positively charged stain is attracted to the negatively
charged portion of the cell.
