1. Title: Lactose Lab

2. Introduction: Background :Enzymes are important components of digestion because they break down large food molecules into smaller chemical subunits. –One digestive enzyme, lactase, –lactose (a disaccharide found in milk) into the monosaccharides glucose and galactose.

3. Purpose: How will the lactase pill (synthetic enzyme) affect the milk’s glucose? Hypothesis: –I think the lactase pill will………because…..

4. Materials: (per group) 1.Milk 10 mL in beaker 2.commercial form of lactase pill 3. 2 Glucose test strip 4.Glucose reading chart

5. Procedures 1.Pour 10 mL of milk into beaker. 2.Test Milk for presence of glucose by dipping the glucose strip into the milk and reading the color. 3. Test Milk with commercial form of lactase by breaking up a lactase pill into the 10mL of milk and testing it for glucose.

6. Data collection SolutionReading of stickP= Positive for Glucose N= Negative for Glucose Milk milk with a commercial form of lactase 0 1003001000 3000

7. Data Analysis and Error Analysis Explain your data Table: Explain any mistakes or circumstances that could have skewed the results.

8. Conclusion Look back at your hypothesis. What did you have correct and what was incorrect? Why? How do these results relate to enzymes (proteins) and carbohydrates? What was the control in this experiment? Why did the lactase pill take apart lactose into glucose and galactose?

9. References