Which step of Koch's postulates is incorrect?
1.The pathogen is first found in an infected, unhealthy
person.
B. 2.The pathogen is isolated from an unhealthy person
and grown in a lab.
C. 3.The pathogen grown in a lab will be given to a healthy
organism that gets the same disease.
D. 4.The pathogen should be isolated again and should
have mutated when compared to the original.

i think the answer would d

answer; lower are;

hi! do you know the answer for this flvs question?

what do anaerobic organisms have in common with photosynthetic organisms?

they both appeared on earth at about the same time.

they both can only exist as single-celled organisms.

they both need an energy source in order to survive.

they both produce carbon dioxide as a waste product.

i am in desperate need of !

yes it would be pssible