Bacteria are microorganisms with a few micrometers long. They come in different shapes too. Let us try growing some bacteria from our fingers using this simple experiment.
Do you love to learn about bacteria and know what they are? If yes, go to our science lessons on bacteria here.
Try it yourself
- Pack of gelatin mix
- Stove or heater (Must be administered by an adult only)
- Deep saucepan
- Glass bowl
Step 1: Follow the instruction on the gelatin pack and make gelatin. Or, heat water on the stove and add the contents of the gelatin pack to it. Stir constantly until the gelatin grains dissolve. Pour the mixture to the glass bowl while it is still hot. Put a lid on the bowl and make sure to avoid any contamination.
Step 2: Store the gelatin overnight (or 8 hours) in the refrigerator for solidifying the gelatin. Once solid, take out the gelatin and touch the gelatin using your fingers.
Step 3: Put the lid again and leave the bowl of gelatin at room temperature for a few days.
Step 4: Observe the gelatin after some days. You will notice white spots on the gelatin.
Microorganisms like bacteria are everywhere but they are too minute for us to see them. Even though we wash our hands, some of these microorganisms remain on our hands. They use gelatin as food and grow at room temperature.