Yeasts Do Amazing Things! Fermentation, glycolysis, Krebs, and respiration are the cornerstones of intermediary metabolism in all cells. Here you can see the acid and gas produced by yeast fermentation of sugar using cabbage pH indicator you make yourself. This isn't just a balloon on a bottle of yeast! What you get in this Labs4Home Lesson Package (100 total pages/slides): Student Version of Yeast Fermentation Lab with Background, Procedure, Data Records, Work Sheets (11 pp)Annotated PowerPoint