Microbiology Lab – Stains Questions and Answers 100% Correct
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Microbiology Lab – Stains
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Microbiology Lab – Stains
Microbiology Lab – Stains Questions
and Answers 100% Correct
What is the purpose of the acid-fast stain?
To identify bacteria with a waxy cell wall, such as Mycobacterium species.
What is the primary stain used in the acid-fast staining procedure?
Carbolfuchsin.
What color do acid-f...
Microbiology Lab – Stains Questions
and Answers 100% Correct
What is the purpose of the acid-fast stain?
✔✔To identify bacteria with a waxy cell wall, such as Mycobacterium species.
What is the primary stain used in the acid-fast staining procedure?
✔✔Carbolfuchsin.
What color do acid-fast bacteria appear after an acid-fast stain?
✔✔Red or pink.
What is the decolorizer used in the acid-fast stain procedure?
✔✔Acid-alcohol.
What is the color of non-acid-fast bacteria after an acid-fast stain?
✔✔Blue, after being counterstained with methylene blue.
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, What is the purpose of the capsule stain?
✔✔To visualize bacterial capsules, which are often difficult to stain with conventional methods.
What does a positive capsule stain look like?
✔✔A clear halo around the bacterial cell, indicating the presence of a capsule.
What is the purpose of a spore stain?
✔✔To detect the presence of bacterial endospores.
What color do bacterial endospores appear after a spore stain?
✔✔Green.
What color do vegetative cells appear in a spore stain?
✔✔Red or pink.
What is the primary stain used in the spore stain?
✔✔Malachite green.
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