Newsela: Growing Microorganisms in a Petri Dish

Question

What is the variable you will change in the experiment described in the section?
a. The temperature of the environment
b. The amount of light reaching the petri dishes
c. source of the microorganisms
d. type of medium used

Answer 1

In the context of an experiment involving growing microorganisms in a petri dish, the variable you will change is typically the type of medium used. This would allow you to observe how different mediums affect the growth of the microorganisms.

So the answer is: d. type of medium used.