Burping Yeast: Investigating Aerobic Respiration

Overview:  In this lab, students construct a tool to measure cellular respiration in baker's yeast and investigate the effect of temperature on the rate of respiration.  This lab can easily expanded to include student-centered investigations.

Curriculum Connections:  cellular respiration, enzyme function, factors that can influence enzyme-catalyzed reactions

Experimental Timing:  From start to finish this lab can be completed in a single 45-50 minute class period.  For additional information, see "Instructor Planning Guide" in the Teacher Materials.

Specialized Equipment Required: test tubes (25 mm X 200 mm) •  hex nuts (3/8 inch stainless steel) • hotplate or microwave