The aim of this experiment is to investigate the effect of changing the level of pH and their concentration during the fermentation of yeast and to at see how much yeast ferments at the different pH and their concentration.

Prediction:

Glucose + Yeast Ethanol + carbon dioxide + energy

The yeast ferments to produce energy. When it does respire it produces and needs products and waste products, these are

shown in the word equation above. To control this reaction the yeast has an enzyme; this enzyme is called zymase. Enzymes are used to control the speed and the rate of the respiration in the yeast; it changes the rate and speed by the environmental surroundings it is put in.

When the pH level is at a neutral point the amount of fermentation will be consistently higher. Therefore when the pH level is at a low or high number i.e...