Question

Why is it a good idea to make a note of the growth patterns on the plate before adding iodine?

Answer 1

It is important to make a note of the growth patterns on the plate before adding iodine because iodine may alter or obscure the patterns of bacterial growth. By noting the patterns beforehand, it allows for a more accurate observation of any changes that occur after adding iodine.

Step-by-step explanation:

It is a good idea to make a note of the growth patterns on the plate before adding iodine because iodine may alter or obscure the patterns of bacterial growth. By noting the patterns beforehand, it allows for a more accurate observation of any changes that occur after adding iodine.

For example, if the bacteria forms distinct colonies, iodine could cause the colonies to merge together, making it difficult to distinguish individual growth patterns.