Purpose

The purpose of this experiment was to measure the cell respiration of yeast when mixed with various concentrations of sugar.
The mixture without any sugar and the red balloon was our control.
The sugar concentrations were our independent variables and the yeast respiration ended up being the dependent variable-- the respiration of the yeast was dependent on the concentration of the sugar in the mixture.
Our group predicted that when we raised the concentration of sugar, more CO2 would be released into the balloon, evidence that there is more respiration.
Our hypothesis: If there is a higher concentration of sugar in the mixture, then the yeast respiration will increase and more carbon dioxide will be produced.