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WGU D311 Microbiology Section 1: Questions With Complete Solutions
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WGU D311 Microbiology Section 1: Questions With Complete Solutions
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WGU D311 Microbiology Section 1: Questions WithComplete Solutions
Which statement describes prokaryotic cells? Right Ans - Prokaryotic cells
are found in coccus form in both pairs and clusters
Which statement describes eukaryotic cells? Right Ans - The nuclei of
eukaryotic cells are surrounded by complex nuclear membranes
Which statement describes the endomembrane system? Right Ans - It
includes the Golgi apparatus, lysosomes, and vesicles
Which statement describes eukaryotic flagella? Right Ans - Eukaryotic
flagella are flexible, whip-like structures
Which statement accurately describes similarities between protozoa and
fungi? Right Ans - Both can be harmful or harmless depending on the
context
Why are algae considered photosynthetic organisms? Right Ans - Algae
produce chemical energy from the sun's light energy
Why are plasmids important to the survival of organisms? Right Ans -
Plasmids carry genetic material, apart from the genome, that can benefit the
organism
Which statement describes bacteria? Right Ans - Some bacteria have cell
walls composed of mycolic acid
Which aspect of nutrient cycling is performed only by prokaryotes? Right
Ans - Nitrogen fixation
Which microbial process is useful in the production of alcoholic beverages?
Right Ans - Glucose fermentation
How does microbial bioremediation benefit the environment? Right Ans -
By helping to metabolize and remove pollutants in the atmosphere
, How is penicillin classified? Right Ans - As a natural antibiotic
What describes the relationship of pathogens to virulence? Right 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? Right Ans - Primary pathogens can infect anyone, whereas
opportunistic pathogens can cause disease if the host is immunocompromised
How can disease expression be described? Right Ans - Signs and symptoms
associated with illness can be a result of many things, including an immune
response
What is the correct understanding of the median infectious dose? Right Ans
- It is the number of pathogenic cells required to cause active infection in 50%
of inoculated animals
Which structure aids in the evasion of phagocytosis by preventing immune
cells from adhering to pathogens? Right Ans - Capsule
Which group contains a pathogen that adheres to host cells by using a large
adhesive disc? Right Ans - Protozoans
Which phenomenon is found only in viruses? Right Ans - Antigenic shift
Which structure is used by certain bacteria to adhere to host tissues? Right
Ans - Type 1 fimbrial adhesin
Which virulence factor aids in the adherence of bacterial pathogens to a host?
Right Ans - Pili
Which situation is an indirect result of endotoxin release? Right Ans -
Inflammation and fever are initiated
Which characteristic is true of endotoxins? Right Ans - Endotoxins cause
fevers
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