Microbiology Lab Final Exam Questions and Answers Already Passed
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Course
Microbiology Lab
Institution
Microbiology Lab
Microbiology Lab Final Exam Questions
and Answers Already Passed
What is the function of bacterial plasmids?
To carry additional genetic material, such as antibiotic resistance genes.
What is the appearance of a positive acid-fast stain result?
Red or pink coloration of the bacteria.
...
Microbiology Lab Final Exam Questions
and Answers Already Passed
What is the function of bacterial plasmids?
✔✔To carry additional genetic material, such as antibiotic resistance genes.
What is the appearance of a positive acid-fast stain result?
✔✔Red or pink coloration of the bacteria.
What is the term for a group of bacteria that form clusters?
✔✔Staphylococci.
What is the role of the nucleoid region in bacterial cells?
✔✔To house the bacterial chromosome, the cell's genetic material.
What does a positive nitrate reduction test indicate?
✔✔The ability of the organism to reduce nitrate to nitrite or nitrogen gas.
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,What is the primary difference between prokaryotic and eukaryotic cells?
✔✔Prokaryotic cells lack a nucleus and membrane-bound organelles, whereas eukaryotic cells
have both.
What is the purpose of using a Gram stain in microbiology?
✔✔To differentiate bacteria based on the composition of their cell walls.
What is the term for bacteria that are shaped like a comma?
✔✔Vibrio.
What is the appearance of a positive hydrogen sulfide (H2S) test result?
✔✔A black precipitate forms in the medium.
What is the function of the bacterial ribosome?
✔✔To synthesize proteins from mRNA during translation.
What is the difference between an autotrophic and a heterotrophic bacterium?
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, ✔✔Autotrophic bacteria can produce their own food from inorganic compounds, while
heterotrophic bacteria rely on organic compounds for nutrition.
What is the purpose of a bacterial fermentation test?
✔✔To detect the ability of bacteria to ferment specific sugars, producing acid and/or gas.
What does a positive motility test indicate about a bacterium?
✔✔The bacterium is capable of moving within a semi-solid medium.
What is the primary purpose of using an autoclave in microbiology?
✔✔To sterilize equipment and media by using high-pressure steam.
What does a positive urease test result look like?
✔✔A pink color change due to ammonia production.
What is the term for bacteria that can only grow in the absence of oxygen?
✔✔Obligate anaerobes.
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