Select the correct sequence for proving Koch's postulates.
1) The microorganism must be recovered from the experimentally infected hosts.
2) The microorganism must be present in every case of the disease.
3) The same disease must be produced when a pure culture of the microorganism is introduced into susceptible hosts.
4) The microorganism must be grown in pure culture from diseased hosts.
A) 2, 4, 3, 1
B) 1, 2, 3, 4
C) 1, 3, 2, 4
D) 4, 3, 1, 2
E) 4, 1, 2, 3

Question

Select the correct sequence for proving Koch's postulates.
1) The microorganism must be recovered from the experimentally infected hosts.
2) The microorganism must be present in every case of the disease.
3) The same disease must be produced when a pure culture of the microorganism is introduced into susceptible hosts.
4) The microorganism must be grown in pure culture from diseased hosts.
A) 2, 4, 3, 1
B) 1, 2, 3, 4
C) 1, 3, 2, 4
D) 4, 3, 1, 2
E) 4, 1, 2, 3

Quizplus · Accepted Answer

Koch's postulates are a series of criteria established by Robert Koch to identify the causative agent of a particular disease. These steps are: 1) The microorganism must be present in every case of the disease. 2) The microorganism must be grown in pure culture from diseased hosts. 3) The same disease must be produced when a pure culture of the microorganism is introduced into susceptible hosts. 4) The microorganism must be recovered from the experimentally infected hosts. Therefore, the correct sequence is 2, 4, 3, 1.

Select the Correct Sequence for Proving Koch's Postulates