Benjamin

=Title=

**Introduction**
I really didn't know anything about yeast before my experiment. When I found out that yeast was a fungi, which meant it was a living creature, and ate. When it eats it produces Carbon Dioxide, just like humans. I began to wonder what it ate though. So if I put the yeast in a bottle with different foods with a balloon on top I could find out what it eats. If the yeast eats the balloon will start filling with air.

Hypothesis
I think that sugar will make the yeast come alive the quickest and make it the biggest. I also think that honey and Gatorade will make the balloon big, but not as fast. I think the yeast will hardly eat the flour and orange juice at all.

Procedure
1. First I got my six bottles and washed them out to make sure they were clean.

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2. Then I measured out a teaspoon of all my ingredients and poured them in the bottles, the ingredients are Gatorade, sugar, honey, flour, orange juice and yeast on its own. The ingredients can change, 3. Then I measured out a teaspoon of yeast and dumped it in all the bottles. 4. After that I measured a teaspoon of water, and put it in after the yeast. As soon as I poured the water in the bottles I needed to get balloon has to go on top of the hole immediately. 5. Then just watch as the balloons fill with air, because that means that the yeast is eating and producing CO2. (Carbon Dioxide) 6. Record how quick it happens and all other information.

=**Materials**=


 * six balloons
 * six bottles
 * one strip of yeast
 * flour
 * sugar
 * Gatorade
 * honey
 * orange juice
 * a cup,
 * a teaspoon

Results
The yeast started eating the Gatorade almost as soon as I mixed them together. The balloon big fairly quick. At first the yeast was only eating the Gatorade, but soon it started eating the orange juice. The orange juice and Gatorade was all it had eaten, so I left it over night. When I came back in the morning the yeast had been eating the sugar and honey. The yeast on its own and the flour didn't get eaten hardly at all. So my hypothesis was half correct, and half wrong. The yeast ate the Gatorade and honey, and sugar. However it took longer than I thought it would for the sugar to be eaten. I was right that the yeast wouldn't eat the flour. Although I was very surprised how fast the yeast ate the Gatorade.

Conclusion
Well, I would say I answered my question. I found out what yeast eats, and what yeast even is for that matter. I learned some uses for yeast other than just leavening bread. I might like to work more with yeast in another science fair project. I also thought it was interesting when I learned that when yeast eats, it produces carbon dioxide, just like humans. I didn't even know that people produced carbon dioxide.

Questions for Further Study
If I did another experiment with yeast, some ideas I might like to try are


 * Will temperature affect the yeast's eating?
 * What will kill yeast the fastest?
 * Will yeast move to the food if not poured directly on top of it?