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Questions and Answers
What is the primary cause of the acid-fast property of M. tuberculosis?
What is the primary cause of the acid-fast property of M. tuberculosis?
- High protein content in the cell wall
- Presence of a specific type of DNA
- Exposure to acidic environments
- Long-chain fatty acids called mycolic acids in the cell wall (correct)
What is the term 'acid-fast' referring to in the context of mycobacteria?
What is the term 'acid-fast' referring to in the context of mycobacteria?
- Ability to retain the carbol fuchsin stain despite subsequent treatment with an ethanol–hydrochloric acid mixture (correct)
- Inability to retain the carbol fuchsin stain despite subsequent treatment with an ethanol–hydrochloric acid mixture
- Resistance to antimicrobial drugs
- High protein content in the cell wall
What percentage of extrapulmonary tuberculosis cases account for tuberculosis of the CNS?
What percentage of extrapulmonary tuberculosis cases account for tuberculosis of the CNS?
- ~5% (correct)
- ~25%
- ~50%
- ~15%
What distinguishes Tuberculous Meningitis (TBM) from bacterial meningitis?
What distinguishes Tuberculous Meningitis (TBM) from bacterial meningitis?
How does Tuberculoma typically present in the context of CNS infection?
How does Tuberculoma typically present in the context of CNS infection?
Which type of stain is required to visualize mycobacteria?
Which type of stain is required to visualize mycobacteria?
What is the unique feature of most pathogenic mycobacteria in terms of growth?
What is the unique feature of most pathogenic mycobacteria in terms of growth?
What is the doubling time of Mycobacterium tuberculosis?
What is the doubling time of Mycobacterium tuberculosis?
Which type of bacteria are virtually the only ones that are acid-fast?
Which type of bacteria are virtually the only ones that are acid-fast?
What is the pigment production a helpful feature for in the identification of mycobacteria?
What is the pigment production a helpful feature for in the identification of mycobacteria?
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