Podcast
Questions and Answers
What is the purpose of fixing microorganisms to a microscope slide before staining?
What is the purpose of fixing microorganisms to a microscope slide before staining?
- To enhance the color of the stain
- To prevent the stain from washing the microbes off the slide (correct)
- To speed up the staining process
- To make the microorganisms easier to observe under the microscope
What is a smear in microbiology staining?
What is a smear in microbiology staining?
- A type of stain used in negative staining
- A film of material containing microorganisms spread on a slide (correct)
- An acidic solution used to wash off excess stain
- A dye used in basic staining techniques
Which type of dye is crystal violet?
Which type of dye is crystal violet?
- Basic dye (correct)
- Acidic dye
- Neutral dye
- Contrast dye
Why are basic dyes attracted to bacterial cells?
Why are basic dyes attracted to bacterial cells?
What is negative staining in microbiology?
What is negative staining in microbiology?
Which type of stain consists of salts composed of a positive and negative ion?
Which type of stain consists of salts composed of a positive and negative ion?
What contributes to making an enlarged and inverted image when using a microscope?
What contributes to making an enlarged and inverted image when using a microscope?
In darkfield microscopy, what is the result of having no background light?
In darkfield microscopy, what is the result of having no background light?
What does a compound light microscope use as its source of illumination?
What does a compound light microscope use as its source of illumination?
Why is darkfield microscopy used for examining certain specimens?
Why is darkfield microscopy used for examining certain specimens?
Which microscope is commonly used in many laboratories and schools?
Which microscope is commonly used in many laboratories and schools?
What type of microscope uses two lenses to magnify images?
What type of microscope uses two lenses to magnify images?
What is the main advantage of Phase-Contrast Microscopy for examining living microorganisms?
What is the main advantage of Phase-Contrast Microscopy for examining living microorganisms?
How does Phase-Contrast Microscopy create an image of the specimen?
How does Phase-Contrast Microscopy create an image of the specimen?
What distinguishes Differential Interference Contrast (DIC) Microscopy from Phase-Contrast Microscopy?
What distinguishes Differential Interference Contrast (DIC) Microscopy from Phase-Contrast Microscopy?
What is the primary advantage of Fluorescence Microscopy in observing specimens?
What is the primary advantage of Fluorescence Microscopy in observing specimens?
When is a fluorochrome stain used in Fluorescence Microscopy?
When is a fluorochrome stain used in Fluorescence Microscopy?
Which microscopy method provides images that are brightly colored and nearly three-dimensional?
Which microscopy method provides images that are brightly colored and nearly three-dimensional?
