In our class we learn Metabolism, Fungi and Metabolism Experiments. I will explain you about Metabolism, Fungi and Metabolism Experiments. Metabolism is to break down molecules to make energy. Fungi has three types mushroom, mold, and fungi. In our class we had made an experiment about metabolism and my experiment is about using bacteria to make yogurt in different temperature. The diagram below is the hypothesis and questions that I did about this experiment.
Names: Soliday-Menghouth-Leap
Experiment Title: Bacteria experiment
First Observations: The bacteria like to live in the warm place.
Question: How does the temperature of milk impact the rate of metabolism of bacteria?
Hypothesis: I think the bacteria in warm milk (35c*) will do more metabolism than bacteria in cold milk and hot milk because bacteria liked nb to live in a warm place when they make yogurt.
| Question | Independent Variable (What we change) | Dependent Variable (What we measure and how/when) | Controls (What we keep the same) | Materials |
| How does the temperature of milk impact the rate of metabolism of bacteria? | We change the temperature | Measure the
thickness of the yogurt by observations |
The type of balloon.
The type of milk. The amount of milk. the amount of bacteria. The same size of the bottle (3 bottles). |
|
Control Group: warm milk ( 35c* )
Experimental Group: Hot milk (40c*) and cold milk (9c*) .
This is the data that we take for our Experiments
| Time | Hot milk(40c*)
observations |
Warm milk(35c*) observations | Cold milk(9c*)
observations |
| 1 hour | Do a little metabolize (thick little bit) | Warm milk do more metabolize (little thick) | Not really thick |
| 2 hour | Thick little | Warm milk do more metabolize (a lot more) | Not really thick (little) |
| 3 hour | Do a normal metabolize (try to make it thick) | Warm milk do more metabolize (a lot) | Not thick, don’t do a lots of metabolize |
At the beginning of our experiment the temperature in each bowl were different. Also, in the beginning, only the hot milk with bacteria have the thickness but at the end all (the ) bowls have the same thickness.
We think this happening because
- Different amount of milk powder.
- The temperature is all the same at the end
This does not match our hypothesis. If we did this experiment again we would
If we did this experiment again we would put the same amount of milk powder.