The yeasts are one very important group of fungi. The common yeast used in baking bread grows very fast. If you want to try this experiment, follow the directions below. This yeast is available in jars if you are planning on doing a large experiment. Bottled soda pop or water in equal amounts.
Different items contain different ounces per container.
Shake each soda bottle and let the foam settle before opening, or open and allow to go flat overnight. Put a teaspoon of dried yeast in each bottle. Seal the bottles tightly and shake the bottle. Remove the lids and stretch a balloon over the mouth of each bottle. The balloon should fit very tightly so that the carbon dioxide does not leak into the air.