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WGU D311: MICRO SECTION 1
EXAMINATION PRACTICE
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QUESTIONS AND CORRECT
DETAILED ANSWERS LATEST
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UPDATE
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, Describes prokaryotic cells. - ANS Prokaryotic cells are found in coccus form in both
pairs and clusters.
Describes eukaryotic cells. - ANS The nuclei of eukaryotic cells are surrounded by
complex nuclear membranes.
Describe eukaryotic flagella. - ANS Eukaryotic flagella are flexible, whip-like
structures.
Describe the endomembrane system. - ANS It includes the Golgi apparatus,
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lysosomes, and vesicles.
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Describe similarities between protozoa and fungi. - ANS Both can be harmful or
harmless depending on the context.
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Why are algae considered photosynthetic organisms? - ANS Algae produce chemical
energy from the sun's light energy.
Why are plasmids important to the survival of organisms? - ANS Plasmids carry
genetic material, apart from the genome, that can benefit the organism.
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Describe bacteria. - ANS Some bacteria have cell walls composed of mycolic acid.
Which aspect of nutrient cycling is performed only by prokaryotes? - ANS Nitrogen
fixation
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Which microbial process is useful in the production of alcoholic beverages? - ANS
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Glucose fermentation
How does microbial bioremediation benefit the environment? - ANS By helping to
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metabolize and remove pollutants in the atmosphere.
How is penicillin classified? - ANS As a natural antibiotic
What describes the relationship of pathogens to virulence? - ANS Highly virulent
pathogens almost always lead to a disease state when introduced to the body.
What is the key difference between a primary pathogen and an opportunistic pathogen?
- ANS Primary pathogens can infect anyone, whereas opportunistic pathogens can
cause disease if the host is immunocompromised.