@thetrendyscienceteacher: This week in biology, my students were subject to the BARF BAG LAB. 🤢 In this lab, students investigated the question: 🔬 Does sugar content affect the amount of CO₂ produced during alcohol fermentation? The setup couldn’t be easier! All you need is: 3 pint-size Ziploc bags Yeast Warm water A timer A heat lamp Three cereals with different sugar contents We tested Frosted Flakes, Captain Crunch, and plain Cheerios to see how differences in sugar content would affect CO₂ production. Here’s how we did it: 1️⃣ Label three plastic bags 1, 2, and 3. 2️⃣ Add ½ cup of a different cereal to each bag. 3️⃣ Add 1 cup of warm water and 1 tsp. of yeast to each bag. 4️⃣ Remove as much air as possible, seal, and gently mix. 5️⃣ Place the bags under a heat lamp and wait 20 minutes! At the end of our 20 minutes, students had some pretty convincing evidence that sugar availability affects CO₂ production during alcohol fermentation. And let’s just say Captain Crunch did NOT disappoint! 😂 We even had a few surprise bag pops! Grab this lab freebie over on my blog:👇🏻 www.thetrendyscienceteacher.com/barfbag #BiologyTeacher #BiologyLab #FermentationLab #AlcoholFermentation #cellularrespiration

The Trendy Science Teacher

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Wednesday 11 November 2026 13:28:41 GMT