In our experiment we are observing about how do cells grow. Our experiment is to observe how do the yeast grow with sugar and with only yeast and hot water. The thing that we need to do this experiment are :
- 2 sachet Yeast
- 3 + table spoon of sugar
- Hot Water
- 2 Conical Flasks
- Plastic Spoon
- 2 Balloons
- Label the conical flask 'A' and 'B'.
- Pour 30 ml of hot water to each of the conical flask.
- Add a flat spoon of yeast to flask A and close the flask right away with a balloon.
- Add a flat spoon of yeast to flask B and a flat teaspoon of sugar and close it right away with the balloon.
This is our record of our experiment.
Flask A :
0 min : 0 cm
15 min : 11 cm
30 min : 13 cm
45 min : 12 cm
Flask B :
0 min : 0 cm
15 min :22 cm
30 min :30 cm
45 min :32 cm
When we are doing this experiment, we were really panic about the ballon in the flask B. It was so big and we thought that it's gonna explode. So we asked our teacher if it's really gonna explode. But she said it will not explode. It was actually like that. So we wait. But in the middle of the experiment our stopwatch is accidentely been reset. But we found the way to solve this problem. It's a good thing that we remember what minutes did we stop on. We did really well in this experiment.
In this experiment I conclude that in order of the cells to grow and multiply,they need an enough energy. In this experiment the yeast is playing a roll of the cell and the water and sugar is the source of energy.
Here are the pictures of the yeast experiment :
There are some articles that I read about this experiment and I hope you can read it also because it is a really good article :
- http://www.sciencebob.com/experiments/yeast.php
- http://www.experiment-resources.com/magic-balloon-experiment.html
- http://www.education.com/activity/article/Yeast_Balloons/
