WGU D311: MICROBIOLOGY WITH LAB: SECTION 1
UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS
Question:
1. Describes prokaryotic cells.
Answer:
Prokaryotic cells are found in coccus form in both pairs and clusters.
Question:
2. Describes eukaryotic cells.
Answer:
The nuclei of eukaryotic cells are surrounded by complex nuclear membranes.
Question:
3. Describe eukaryotic flagella.
Answer:
Eukaryotic flagella are flexible, whip-like structures.
Question:
4. Describe the endomembrane system.
Answer:
It includes the Golgi apparatus, lysosomes, and vesicles.
Question:
5. Describe similarities between protozoa and fungi.
Answer:
Both can be harmful or harmless depending on the context.
Question:
6. Why are algae considered photosynthetic organisms?
Answer:
Algae produce chemical energy from the sun's light energy.
Question:
7. Why are plasmids important to the survival of organisms?
Answer:
Plasmids carry genetic material, apart from the genome, that can benefit the organism.
Question:
8. Describe bacteria.
Answer:
Some bacteria have cell walls composed of mycolic acid.
, Question:
9. Which aspect of nutrient cycling is performed only by prokaryotes?
Answer:
Nitrogen fixation
Question:
10. Which microbial process is useful in the production of alcoholic beverages?
Answer:
Glucose fermentation
Question:
11. How does microbial bioremediation benefit the environment?
Answer:
By helping to metabolize and remove pollutants in the atmosphere.
Question:
12. How is penicillin classified?
Answer:
As a natural antibiotic
Question:
13. What describes the relationship of pathogens to virulence?
Answer:
Highly virulent pathogens almost always lead to a disease state when introduced to the body.
Question:
14. What is the key difference between a primary pathogen and an opportunistic pathogen?
Answer:
Primary pathogens can infect anyone, whereas opportunistic pathogens can cause disease if the host is
immunocompromised.
Question:
15. How can disease expression be described?
Answer:
Signs and symptoms associated with illness can be a result of many things, including an immune response.
Question:
16. What is the correct understanding of the median infectious dose?
Answer:
It's the number of pathogenic cells required to cause active infection in 50% of inoculated animals.
Question:
17. Which structure aids in the evasion of phagocytosis by preventing immune cells from adhering to
pathogens?
Answer:
Capsule
UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS
Question:
1. Describes prokaryotic cells.
Answer:
Prokaryotic cells are found in coccus form in both pairs and clusters.
Question:
2. Describes eukaryotic cells.
Answer:
The nuclei of eukaryotic cells are surrounded by complex nuclear membranes.
Question:
3. Describe eukaryotic flagella.
Answer:
Eukaryotic flagella are flexible, whip-like structures.
Question:
4. Describe the endomembrane system.
Answer:
It includes the Golgi apparatus, lysosomes, and vesicles.
Question:
5. Describe similarities between protozoa and fungi.
Answer:
Both can be harmful or harmless depending on the context.
Question:
6. Why are algae considered photosynthetic organisms?
Answer:
Algae produce chemical energy from the sun's light energy.
Question:
7. Why are plasmids important to the survival of organisms?
Answer:
Plasmids carry genetic material, apart from the genome, that can benefit the organism.
Question:
8. Describe bacteria.
Answer:
Some bacteria have cell walls composed of mycolic acid.
, Question:
9. Which aspect of nutrient cycling is performed only by prokaryotes?
Answer:
Nitrogen fixation
Question:
10. Which microbial process is useful in the production of alcoholic beverages?
Answer:
Glucose fermentation
Question:
11. How does microbial bioremediation benefit the environment?
Answer:
By helping to metabolize and remove pollutants in the atmosphere.
Question:
12. How is penicillin classified?
Answer:
As a natural antibiotic
Question:
13. What describes the relationship of pathogens to virulence?
Answer:
Highly virulent pathogens almost always lead to a disease state when introduced to the body.
Question:
14. What is the key difference between a primary pathogen and an opportunistic pathogen?
Answer:
Primary pathogens can infect anyone, whereas opportunistic pathogens can cause disease if the host is
immunocompromised.
Question:
15. How can disease expression be described?
Answer:
Signs and symptoms associated with illness can be a result of many things, including an immune response.
Question:
16. What is the correct understanding of the median infectious dose?
Answer:
It's the number of pathogenic cells required to cause active infection in 50% of inoculated animals.
Question:
17. Which structure aids in the evasion of phagocytosis by preventing immune cells from adhering to
pathogens?
Answer:
Capsule
