Mystery Petri Dish

By: 1/3 of the Dream Team, Matthew Heinekin

Petri Dishes Day 1

Room Temperature on the left and 37 degrees Celsius on the right.

Petri Dishes Day 3

Room Temperature on the left and 37 degrees Celsius on the right.

Petri Dishes Day 7

Room Temperature on the left and 37 degree Celsius on the right.

Room Temperature Incubation Colonies:

• Bottom of Shoe- 100
• Palm of Hand- 2
• Lab Table- 5
• Phone Screen- 0

Room Temperature Incubation Organisms:

• Bottom of Shoe- 10
• Palm of Hand- 1
• Lab Table- 4
• Phone Screen- 0

37 degrees Celsius Incubation Colonies:

• Bottom of Shoe- 50
• Palm of Hand- 100
• Lab Table- 40
• Phone Screen- 40

37 degrees Celsius Incubation Organisms:

• Bottom of Shoe- 5
• Palm of Hand- 5 
• Lab Table- 4
• Phone Screen- 2

Comparison:

When comparing both petri dishes the colonies and organisms

varied immensely. You can definitely tell which organisms could

only thrive in room temp compared to the 37 degree Celsius. Also

the organisms that are the same in both dishes only vary in size,

concluding that they enjoy that climate much better.

Outcomes:

Based on the outcomes of the experiment I am a little surprised

of how the petri dishes developed in the different conditions. When

looking at the room temperature dish it was interesting to see that my

phone screen had no growth of any type of bacteria and fungus when

compared to my hand. On the other hand in the 37 degree Celsius dish

there was a profound amount of growth in every section of the dish. As

for the shoe sample in both dishes, I wasn't surprised about the results

because in reality I am testing multiple places that I have walked to and from.

Discrepancies:

None to report.

Room Temp Petri Dish Close up

37 degree Celsius Petri Dish Close up