yeast experiment

in science we have yeast experiment.the objective on this experiment is to prove that cell need energy to grow.
in this experiment the material is:
- yeast
-hot water
-sugar
-2 beakers
-2 balloons

proses:
1,we need to put yeast and hot water in each beaker
2, put sugar in one of the beaker
3 directly close the beaker with balloon

if you want to know more about yeast, you can visit this site: http://www.graniteschools.org/jr/Wasatch/faculty/Stucki/Scientific/experiment/experiment_page_3.html

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