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WGU D311 MICROBIOLOGY
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WITH LAB 2024 PA
EXAMINATION PRACTICE
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QUESTIONS AND CORRECT
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DETAILED ANSWERS LATEST
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UPDATE
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, Which class of cells most often contain extrachromosomal DNA found in plasmids? -
ANS Prokaryotic
What is the significance of the molecule that makes up the bilayer formed in the plasma
membrane of most bacterial and eukaryotic cells? - ANS Phospholipids help maintain
hydrophobic and hydrophilic environments.
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Which microorganisms produce dermatophytes that can cause skin infections, such as
athlete's foot and ringworm? - ANS Fungi
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Which microorganisms can produce human pathogens that spread via microsporidia? -
ANS Fungi
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Why are archaea considered prokaryotic organisms? - ANS Their cells do not contain
a nucleus.
Why is MRSA more pathogenic than other strains of Staphylococcus aureus? - ANS
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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? - ANS Iatrogenic
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Which viral virulence factor requires adjustments to the influenza vaccine annually? -
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ANS Antigenic variation
Which pair of enzymes are produced by some bacteria that causes the clotting of blood
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to protect the bacteria in the bloodstream, then a digestion of the clots to allow the
bacteria to spread? - ANS Coagulase and kinase
How does coinfection of a single cell by multiple strains of a virus increase it's
pathogenicity? - ANS 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.