D311 WGU Microbiology With Lab Pre
Assessment Questions With Correct
Answers.
Which class of cells most often contain extrachromosomal DNA found in plasmids?
A. Prokaryotic
B. Eukaryotic
C. Animal
D. Protist - ANSWER- A. Prokaryotic
What is the significance of the molecule that makes up the bilayer formed in the plasma
membrane of most bacterial and eukaryotic cells?
A.Phospholipids help maintain hydrophobic and hydrophilic environments.
B. Mitochondria help maintain the energy required for the diffusion of nutrients
C. Ribosomes help maintain protein structures
D. Cytoplasm helps maintain hydrophobic and hydrophilic environments - ANSWER-
A.Phospholipids help maintain hydrophobic and hydrophilic environments.
Which microorganisms produce dermatophytes that can cause skin infections, such as
athlete's foot and ringworm?
A. Fungi
B. Bacteria
C. Viruses
D. Parasites - ANSWER- A. Fungi
Which microorganisms can produce human pathogens that spread via microsporidia?
A. Fungi
B. Bacteria
C. Viruses
D. Parasites - ANSWER- A. Fungi
Why are archaea considered prokaryotic organisms?
A. Their cells are composed of pseudopeptidoglycan
B. They are unicellular
C. They can live in extreme environments
D. Their cells do not contain a nucleus - ANSWER- D. Their cells do not contain a
nucleus.
Why is MRSA more pathogenic than other strains of Staphylococcus aureus?
A. MRSA has increased antibiotic resistance
B. MRSA produces an enterotoxin
C. MRSA resists degradation by phagocytes
, D. MRSA produces hyaluronidase to penetrate skin - ANSWER- A. MRSA has
increased antibiotic resistance.
A patient recently had an outpatient surgical procedure. After a few days at home, they
noticed swelling and redness at their incision site. How would this infection be
classified?
A. Latrogenic
B. Zoonotic
C. Noncommunicable
D. Vectors-transmitted - ANSWER- A. Iatrogenic
Which viral virulence factor requires adjustments to the influenza vaccine annually?
A. Antigenic variation
B. Encapsulation
C. Adhesion
D. Replication - ANSWER- A. Antigenic variation
Which pair of enzymes are produced by some bacteria that causes the clotting of blood
to protect the bacteria in the bloodstream, then a digestion of the clots to allow the
bacteria to spread?
A. Coagulase and kinase
B. Protease and phospholipid
C. Hyaluronidase and collagenase
D. Coagulase and nuclear - ANSWER- A. Coagulase and kinase
How does coinfection of a single cell by multiple strains of a virus increase its
pathogenicity?
A. Coinfection provides the opportunity for an antigenic shift
B. Coinfection limits the opportunity for harmful mutations
C. Coinfection provides the animal to adapt to the pathogen
D. Coinfection provides the opportunity for the pathogen to integrate into the cells
genome - ANSWER- A. Coinfection provides the opportunity for an antigenic shift.
Canned food is heated and sealed in sterile containers to provide a longer shelf life and
prevent spoilage. Improper canning results in the growth of microorganisms, which may
result in food containers that swell and explode.
Which staining technique can be used to identify these microorganisms?
A. Endospore staining
B. Negative staining
C. Acid fast staining
D. Flagella staining - ANSWER- A. 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.
Assessment Questions With Correct
Answers.
Which class of cells most often contain extrachromosomal DNA found in plasmids?
A. Prokaryotic
B. Eukaryotic
C. Animal
D. Protist - ANSWER- A. Prokaryotic
What is the significance of the molecule that makes up the bilayer formed in the plasma
membrane of most bacterial and eukaryotic cells?
A.Phospholipids help maintain hydrophobic and hydrophilic environments.
B. Mitochondria help maintain the energy required for the diffusion of nutrients
C. Ribosomes help maintain protein structures
D. Cytoplasm helps maintain hydrophobic and hydrophilic environments - ANSWER-
A.Phospholipids help maintain hydrophobic and hydrophilic environments.
Which microorganisms produce dermatophytes that can cause skin infections, such as
athlete's foot and ringworm?
A. Fungi
B. Bacteria
C. Viruses
D. Parasites - ANSWER- A. Fungi
Which microorganisms can produce human pathogens that spread via microsporidia?
A. Fungi
B. Bacteria
C. Viruses
D. Parasites - ANSWER- A. Fungi
Why are archaea considered prokaryotic organisms?
A. Their cells are composed of pseudopeptidoglycan
B. They are unicellular
C. They can live in extreme environments
D. Their cells do not contain a nucleus - ANSWER- D. Their cells do not contain a
nucleus.
Why is MRSA more pathogenic than other strains of Staphylococcus aureus?
A. MRSA has increased antibiotic resistance
B. MRSA produces an enterotoxin
C. MRSA resists degradation by phagocytes
, D. MRSA produces hyaluronidase to penetrate skin - ANSWER- A. MRSA has
increased antibiotic resistance.
A patient recently had an outpatient surgical procedure. After a few days at home, they
noticed swelling and redness at their incision site. How would this infection be
classified?
A. Latrogenic
B. Zoonotic
C. Noncommunicable
D. Vectors-transmitted - ANSWER- A. Iatrogenic
Which viral virulence factor requires adjustments to the influenza vaccine annually?
A. Antigenic variation
B. Encapsulation
C. Adhesion
D. Replication - ANSWER- A. Antigenic variation
Which pair of enzymes are produced by some bacteria that causes the clotting of blood
to protect the bacteria in the bloodstream, then a digestion of the clots to allow the
bacteria to spread?
A. Coagulase and kinase
B. Protease and phospholipid
C. Hyaluronidase and collagenase
D. Coagulase and nuclear - ANSWER- A. Coagulase and kinase
How does coinfection of a single cell by multiple strains of a virus increase its
pathogenicity?
A. Coinfection provides the opportunity for an antigenic shift
B. Coinfection limits the opportunity for harmful mutations
C. Coinfection provides the animal to adapt to the pathogen
D. Coinfection provides the opportunity for the pathogen to integrate into the cells
genome - ANSWER- A. Coinfection provides the opportunity for an antigenic shift.
Canned food is heated and sealed in sterile containers to provide a longer shelf life and
prevent spoilage. Improper canning results in the growth of microorganisms, which may
result in food containers that swell and explode.
Which staining technique can be used to identify these microorganisms?
A. Endospore staining
B. Negative staining
C. Acid fast staining
D. Flagella staining - ANSWER- A. 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.
