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Product 14172

By: The Flinn Staff

Lactose Intolerance Demonstration Kit for biochemistry shows an over-the-counter enzyme Lactaid™ (lactase) in action. Enough materials for seven demonstrations.

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Product Details

Intestinal gas—not a very pleasant thought! Gas can be a big problem for those who lack the enzymes to digest certain foods. Do products that advertise to eliminate this problem really work? This demonstration kit shows an over-the-counter enzyme Lactaid™ (lactase) in action! Flasks containing various sugar combinations with and without Lactaid™ are compared for gas production by yeast cells. Balloons inflate very quickly when digestible sugars are available to the lactose intolerant yeast cells. Inflated and non-inflated balloons dramatically illustrate the concept and consequences for students.

Concepts: Enzymes, disaccharaides, monosaccharides.
Time Required: One class period

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Analyzing and interpreting data

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
HS-PS1.A: Structure and Properties of Matter

Crosscutting Concepts


Performance Expectations

MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.