NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Postulate 1:
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The disease must be reproduced when a pure culture of the agent is inoculated into a susceptible host.
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The agent must be present in every case of the disease.
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The agent must be recoverable from the experimentally infected host.
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The agent must be isolated and culture in vitro.
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Explanation:
Detailed explanation-1: -Postulate 1: The microorganism must be found in abundance in all organisms suffering from the disease, but should not be found in healthy organisms. Postulate 2: The microorganism must be isolated from a diseased organism and grown in pure culture.
Detailed explanation-2: -These four steps, rules, or criteria are known as “Koch’s postulates.” 1. The suspected causal agent (bacterium or other microorganism) must be present in every diseased organism (e.g., a plant) examined.
Detailed explanation-3: -Koch’s postulates were formulated in the late nineteenth century as guidelines for establishing that microbes cause specific diseases.
There is 1 question to complete.