Multiple Choice
Which of these is considered a differential stain and why?
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- 1. Introduction to Microbiology3h 27m
- Introduction to Microbiology18m
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9. Microscopes
Reviewing the Types of Staining
Multiple Choice
Which of the following stains is NOT correctly matched with its function or purpose?
A
Gram-stain:A staining technique that stains gram-positive and gram-negative bacterial cells different colors.
B
Simple stain:A staining technique that can stain all types of bacteria cells, including bacterial endospores
C
Acid-fast stain:A technique used to stain bacteria that possess mycolic acid in their cell walls.
D
Capsule stain:A staining technique that stains the background behind bacteria to allow their capsules to visually stand out.
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Verified step by step guidance1
Understand the purpose of each staining technique mentioned in the problem.
Gram-stain: This technique differentiates bacteria into gram-positive and gram-negative based on the composition of their cell walls.
Simple stain: This technique is used to stain all types of bacterial cells, but it does not specifically stain bacterial endospores. It is used for general visualization of bacteria.
Acid-fast stain: This technique is used to identify bacteria with mycolic acid in their cell walls, such as Mycobacterium species.
Capsule stain: This technique stains the background, allowing the capsule of the bacteria to stand out, which helps in visualizing the capsule structure.
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