WGU OA D311: Microbiology || Errorless Answers 100%.
What is the significance of microorganisms containing a thick coat of peptldogiywn within the
cell wall? correct answers Microorganisms containing a thick coat of peptidoglycan within the
cell wall are typically classified as gram-positive bacteria.
Why are viruses considered aceilular? correct answers They cannot reproduce without a host.
What is the defining characteristic of eukaryotes? correct answers They have a nucleus.
Which microorganism can cause vaginal yeast Infections and oral thrush? correct answers Fungi
Why can It be difficult to determine the etiologic agent of a disease? correct answers Some signs
and symptoms can be caused by many different etiologic agents.
What kind of staining technique Is the acid-fast stain? correct answers differential staining
technique used to distinguish between acid-fast and non-acid-fast bacteria based on the presence
of mycolic acid in their cell walls. The high lipid content of acid-fast organisms, like
Mycobacterium, requires special stains, such as Carbolfuchsin, to penetrate their waxy cell walls
A doctor prescribed antibiotics for a patient complaining of runny nose. fever. and aches and
pains. Which type of infection did the doctor suspect? correct answers The doctor likely
suspected a bacterial 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? correct answers
Antifungals
Which structure promotes motility in Proteus. Shigelia. and Salmonella species. all of which can
cause serious disease in humans? correct answers Presence of flagella
, Which bacterial virulence factor allows a strain to resist phagocytosis, increasing the organism's
virulence? correct answers Capsule production
Why is treating Haemophilus influenzae difficult? correct answers The capsule is antiphagocytic.
How do pili aid pathogens in causing disease? correct answers They cause pathogens to adhere to
host cells.
Which virulence factor allows pathogens to penetrate the dermis and invade the body? correct
answers 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? correct answers Gram staining
What does the presence of a clear area around a cell stained with India ink indicate about the
cell? correct answers The cell has a capsule.
How do basic stains work? correct answers The positively charged stain is attracted to the
negatively charged portion of the cell.
Which staining technique is used to distinguish bacteria based on their ability to produce
structures that can survive extreme heat stress? correct answers Endospore stain
Which aspect of a staining protocol enables dye to penetrate an endospore? correct answers Heat
Why are the relationships between pathogenic microbes and their hosts considered parasitic?
correct answers The microbe benefits from the interaction while the host is harmed.
Which characteristic of dracunculiasis has been pivotal to the success of its eradication
campaign? correct answers Dracunculiasis has no animal reservoir.
What is the significance of microorganisms containing a thick coat of peptldogiywn within the
cell wall? correct answers Microorganisms containing a thick coat of peptidoglycan within the
cell wall are typically classified as gram-positive bacteria.
Why are viruses considered aceilular? correct answers They cannot reproduce without a host.
What is the defining characteristic of eukaryotes? correct answers They have a nucleus.
Which microorganism can cause vaginal yeast Infections and oral thrush? correct answers Fungi
Why can It be difficult to determine the etiologic agent of a disease? correct answers Some signs
and symptoms can be caused by many different etiologic agents.
What kind of staining technique Is the acid-fast stain? correct answers differential staining
technique used to distinguish between acid-fast and non-acid-fast bacteria based on the presence
of mycolic acid in their cell walls. The high lipid content of acid-fast organisms, like
Mycobacterium, requires special stains, such as Carbolfuchsin, to penetrate their waxy cell walls
A doctor prescribed antibiotics for a patient complaining of runny nose. fever. and aches and
pains. Which type of infection did the doctor suspect? correct answers The doctor likely
suspected a bacterial 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? correct answers
Antifungals
Which structure promotes motility in Proteus. Shigelia. and Salmonella species. all of which can
cause serious disease in humans? correct answers Presence of flagella
, Which bacterial virulence factor allows a strain to resist phagocytosis, increasing the organism's
virulence? correct answers Capsule production
Why is treating Haemophilus influenzae difficult? correct answers The capsule is antiphagocytic.
How do pili aid pathogens in causing disease? correct answers They cause pathogens to adhere to
host cells.
Which virulence factor allows pathogens to penetrate the dermis and invade the body? correct
answers 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? correct answers Gram staining
What does the presence of a clear area around a cell stained with India ink indicate about the
cell? correct answers The cell has a capsule.
How do basic stains work? correct answers The positively charged stain is attracted to the
negatively charged portion of the cell.
Which staining technique is used to distinguish bacteria based on their ability to produce
structures that can survive extreme heat stress? correct answers Endospore stain
Which aspect of a staining protocol enables dye to penetrate an endospore? correct answers Heat
Why are the relationships between pathogenic microbes and their hosts considered parasitic?
correct answers The microbe benefits from the interaction while the host is harmed.
Which characteristic of dracunculiasis has been pivotal to the success of its eradication
campaign? correct answers Dracunculiasis has no animal reservoir.
