M6 Micro

Question 1

What is commensalism?

Answer 1

One organism benefits while the other is not harmed.

Question 2

What is mutualism?

Answer 2

Both organisms benefits and depend on each other

Question 3

What is parasitism?

Answer 3

One organism benefits, the other is harmed.

Question 4

Opportunism

Answer 4

A change in living relationship that leads to parasitism.

Question 5

What is Koch’s postulates?

Answer 5

1. the suspected pathogen must be present in all diseased animals and absent from all healthy animals.
2. the suspected pathogen must be grown in pure lab culture
3. the grown pathogen must cause disease in a healthy animal.
4. the suspected pathogen must be reisolated and shown to be the original pathogen