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Introduction

You could not run a race or digest food without enzymesAny of numerous complex proteins produced by living cells that act as catalysts.. Actually, you could not grow up without enzymes working in your body. Present in all living things, enzymes are catalystsA compound that starts or speeds up the rate of a chemical reaction without undergoing any change in its own composition., that is, little chemical spark plugs that activate some 1,000 to 2,000 reactionsResponse to an action prompted by stimulus. in each cell. Enzymes control the way our bodies work. They help other life forms function as well. For example, the silkworm cannot break out of its cocoon without enzymes.

1. Introduction
2. A hunk of meat, a hawk, and a discovery
3. What's in a name?
4. As simple as a lock and key
5. Enzyme industry
6. Experiment 1 - Finding the Enzyme: Which enzyme breaks down hydrogen peroxide?
7. Experiment 2 - Tough and Tender: Does papain speed up the aging process?
8. Design Your Own Experiment