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Questions and Answers
What was the purpose of the swan neck-shaped tubes in Pasteur's experiment?
What was the purpose of the swan neck-shaped tubes in Pasteur's experiment?
- To increase the surface area of the broth for microbial growth
- To prevent dust particles from entering the flask (correct)
- To allow airborne microorganisms to enter the flask
- To facilitate the growth of microorganisms in the broth
What was the outcome of Pasteur's experiment when he broke the neck of the flask?
What was the outcome of Pasteur's experiment when he broke the neck of the flask?
- The dust particles were sterilized
- Microbial growth was observed immediately (correct)
- The broth remained sterile
- No microbial growth was observed
What is the first step in Koch's postulates?
What is the first step in Koch's postulates?
- To grow the pathogen in pure culture
- To isolate the pathogen from the diseased host
- To demonstrate the presence of the pathogen in every case of the disease (correct)
- To reproduce the specific disease in a healthy host
What is the fundamental principle of the germ theory of infectious disease?
What is the fundamental principle of the germ theory of infectious disease?
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What was the significance of Pasteur's experiment in the history of microbiology?
What was the significance of Pasteur's experiment in the history of microbiology?
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What is the purpose of growing a pathogen in pure culture in Koch's postulates?
What is the purpose of growing a pathogen in pure culture in Koch's postulates?
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What is the third step in Koch's postulates?
What is the third step in Koch's postulates?
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Who is considered one of the greatest biologists in history based on his findings in microbiology?
Who is considered one of the greatest biologists in history based on his findings in microbiology?
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What was the time period during which Pasteur's flasks remained free from microbial growth?
What was the time period during which Pasteur's flasks remained free from microbial growth?
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What is the primary goal of Koch's postulates?
What is the primary goal of Koch's postulates?
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