W11 D4 Respiration Lab 4

The experiment was set up in three bottles. The first bottle had only yeast and water. The second bottle had only sugar and water. The third bottle had all three. 

To collect our results we measured how big the balloon got which meant the amount of gas that was produced. 

Cell respiration occurred in the third bottle because the balloon inflated. The balloon in the other trials did not inflate, which meant that no cell respiration occurred. 

These results make sense because in the third bottle there was the yeast and the reactant it needed for cell respiration which was the glucose. In this bottle when cell respiration occurred, it produced carbon dioxide which caused the balloon to fill up.