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WGU D311 OA FINAL EXAM/ WGU D311 MICROBIOLOGY
OBJECTIVE ASSESSMENT FINAL EXAM NEWEST 2025/2026
NEWEST ACTUAL EXAM WITH COMPLETE QUESTIONS AND
VERIFIED ANSWERS |ALREADY GRADED A+|
Which virulence factor aids in the adherence of bacterial
pathogens to a host? - ANSWER-Pili
Which situation is an indirect result of endotoxin release? -
ANSWER-Inflammation and fever are initiated.
What is a characteristic of endotoxins? - ANSWER-Endotoxins
cause fever.
What is a characteristic of exotoxins? - ANSWER-Exotoxins can
cause cytokine storms.
Describe biofilms. - ANSWER-Biofilms are highly structured
communities.
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Which step in biofilm formation comes immediately after
planktonic cells attach to a surface? - ANSWER-Planktonic cells
become sessile.
Which biofilms are produced by mutualistic microbes and are
beneficial to a human host? - ANSWER-Biofilms that line the
intestinal mucosa.
Why would bacteria living in a biofilm slow down their
metabolism? - ANSWER-To survive the low-nutrient environment
deep in the biofilm structure.
Which type of microscopy allows the visualization of internal
cellular structures in specially fixed microbial specimens? -
ANSWER-Electron microscopy
What does a phase-contrast microscope use to visualize a
specimen? - ANSWER-Light
WGU D311 OA FINAL EXAM/ WGU D311 MICROBIOLOGY
OBJECTIVE ASSESSMENT FINAL EXAM NEWEST 2025/2026
NEWEST ACTUAL EXAM WITH COMPLETE QUESTIONS AND
VERIFIED ANSWERS |ALREADY GRADED A+|
Which virulence factor aids in the adherence of bacterial
pathogens to a host? - ANSWER-Pili
Which situation is an indirect result of endotoxin release? -
ANSWER-Inflammation and fever are initiated.
What is a characteristic of endotoxins? - ANSWER-Endotoxins
cause fever.
What is a characteristic of exotoxins? - ANSWER-Exotoxins can
cause cytokine storms.
Describe biofilms. - ANSWER-Biofilms are highly structured
communities.
, Page |2
Which step in biofilm formation comes immediately after
planktonic cells attach to a surface? - ANSWER-Planktonic cells
become sessile.
Which biofilms are produced by mutualistic microbes and are
beneficial to a human host? - ANSWER-Biofilms that line the
intestinal mucosa.
Why would bacteria living in a biofilm slow down their
metabolism? - ANSWER-To survive the low-nutrient environment
deep in the biofilm structure.
Which type of microscopy allows the visualization of internal
cellular structures in specially fixed microbial specimens? -
ANSWER-Electron microscopy
What does a phase-contrast microscope use to visualize a
specimen? - ANSWER-Light
