Question

Which of the following point can be included in Koch postulates?

• A. The microorganism must be isolated from a diseased organism and grown in pure culture
• B. The cultured microorganism should cause disease when introduced into a healthy organism
• C. Cells are formed from preexisting cells
• D. Both A and B

Answer 1

The correct option is D Both A and B

The four concepts that were established by Robert Koch to identify the causative agent of a particular disease were known as Koch postulates. They were as follows-

1) The microorganism must be present in all cases of the disease.

2) The microorganism must be isolated from a diseased host and grown in pure culture.

3) The microorganism from the pure culture must cause the disease when inoculated into a healthy organism.

4) The microorganism must be reisolated from the new host and shown to be the same as the originally inoculated one.

Thus the correct answer is option D.