NURSING ANM AND GNM

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NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Put Koch’s Postulates in order the proper order.(1) The microbe can be isolated and grown in pure culture outside of the host(2) The same microorganism must then be isolated from the inoculated animal (3) The microbe must be present in every animal with the disease, and absent in healthy.(4) The cultured microorganism must cause the same disease in inoculated animals
A
3, 4, 2, 1
B
2, 4, 1, 3
C
3, 1, 4, 2
D
1, 2, 3, 4
Explanation: 

Detailed explanation-1: -Postulate 4: The microorganism must be reisolated from the inoculated, diseased experimental host and identified as being identical to the original specific causative agent.

Detailed explanation-2: -Koch’s postulates were formulated in the late nineteenth century as guidelines for establishing that microbes cause specific diseases. Because the rules were developed for living agents-particularly bacteria-their applicability to inanimate pathogens such as viruses and infectious proteins has been problematic.

Detailed explanation-3: -1. The suspected pathogen should be found in all instances of the disease in question, and its distribution in the host should correspond with the distribution of observed lesions. 2. The organism should be cultivated outside the body of the host in pnre culture for several generations.

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