Enzymes as Catalysts for Starch Digestion
This kit allows students to qualitatively and quantitatively observe the catalytic effects of enzymes on the breakdown of starch into sugar. In Part 1, students use Starch Indicator (Lugol’s) Solution to provide evidence that enzymes play a critical role in the breakdown of starch. Part 2, a teacher demonstration, shows that the breakdown of starch results in the production of glucose. In Part 3, student experiments provide evidence that the enzymes are catalysts for the process, not reactants. Optional extensions allow students to examine the effects of temperature and pH on the enzyme activity.
Details at a Glance
- 1-2 Days | 1-2 ~50 minute class periods
- 3 Activities
- Accommodates 1 class, with 6 groups of 5 students
- Consumables service 30 students
- Meets our criteria for supporting literacy
- Includes digital resources
- Requires a water source
Scientific Concepts
•Substances react chemically in characteristic ways with other substances to form new substances.
•Chemical reactions take place constantly in every cell in order to sustain life.
•Many cell functions involve chemical reactions made possible by enzyme catalysts.
KEY VOCABULARY: catalyst, starch, enzyme, sugar
Guides & Student Sheets
Our kits and modules provide you with everything you need so you can open, review, and teach the material confidently the next day.
- Full downloadable Teacher Guide with background information, detailed instruction, example data and answers
- Downloadable Student Sheets with age appropriate background information, full procedure(s), and analysis questions
- All materials necessary to carry out the investigation
- Safety Data Sheets
Kit Components
- 30 Droppers, plastic
- 12 Lab-Aids Chemplate with stir sticks
- 12 Lab-Aids A/B trays
- 6 30-mL drop-controlled bottles of Starch Suspension (shipped empty)
- 6 Bottles of Starch Indicator (Lugol’s) solution
- 3 Lab-Aids 20-mL graduated tubes
- 3 Glucose test tablets
- 1 240-mL supply bottle containing powdered enzyme (amylase)
- 1 240-mL supply bottle containing powdered starch
- 28 Student Worksheet and Guides, Part I and Part II
- 1 Teacher’s Guide
- 1 Safety Data Sheet (SDS) packet
- Not included and needed for instruction: Permanent marker.
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