Podcast
Questions and Answers
Which of the following is used as a counterstain in the acid fast stain technique?
Which of the following is used as a counterstain in the acid fast stain technique?
Which stain is primarily used to identify Mycobacterium tuberculosis?
Which stain is primarily used to identify Mycobacterium tuberculosis?
What is the role of methylene blue in the Ziehl neelsen stain method?
What is the role of methylene blue in the Ziehl neelsen stain method?
Which process involves post replication repair mechanisms?
Which process involves post replication repair mechanisms?
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Which substance is used as a primary stain in the Ziehl neelsen method?
Which substance is used as a primary stain in the Ziehl neelsen method?
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Study Notes
Mycobacterium tuberculosis
- Mycobacterium tuberculosis is identified using acid-fast stain, which involves two dyes: crystal violet and safranin.
- Another method used to identify Mycobacterium tuberculosis is the Ziehl-Neelsen stain, which involves the following steps: decolorization with alcohol, and then counterstaining with methylene blue, followed by staining with carbol fuchsin.
DNA Repair
- Post-replication repair is a mechanism of DNA repair that occurs after DNA replication.
- DNA repair involves the removal of lesions, which are damaged areas of DNA.
- Excision repair is a type of DNA repair that involves the removal of damaged DNA nucleotides.
- Recombination repair is a type of DNA repair that involves the exchange of genetic material between two DNA molecules.
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Description
This quiz covers the detection of Mycobacterium tuberculosis using acid-fast stains and Ziehl-Neelsen stain, as well as various mechanisms of DNA repair including post-replication repair and excision repair.
