Microbes

Microbiology beginners feed different sweetening agents to yeast and measure carbon dioxide production to estimate energy contained in each. They set the trials up in zip-top plastic baggies and then measure gas volume by water displacement. The objective of the instructional activity and teacher preparation notes are complete, but instructions for student procedures are not. Prepare a step-by-step procedure for the experiment so that the amounts of yeast and sweetener are consistent.