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Students will use pineapple juice as an enzyme and Jell-O™ as a substrate to illustrate an enzyme/substrate complex. Students will discover that the processing of food will denature enzymes.

5:12 video animation describes the basics of enzyme structure and function. This includes enzyme substrates and active sites, enzyme denaturation, and competitive and non-competitive inhibition.

The Amoeba Sisters explain enzymes and how they interact with their substrates. Vocabulary covered includes active site, induced fit, coenzyme, and cofactor. Also the importance of ideal pH and temperatures for enzymes are discussed.

Plant species belonging to divergent branches of the evolutionary tree are known to have independently evolved caffeine production. According to scientists at Western Michigan University, caffeine-producing plants have taken a number of different biochemical routes to synthesize the stimulant. Coffee, tea, cocoa, orange, and guaraná plants make caffeine using an array of enzymes and substrates, the researchers reported in PNAS this week (September 20).

A data collection and analysis lesson that examines selection for coat color in pocket mouse populations on different color substrates over time.

4 min animated video illustrating activation energy, substrate, catalyst, products, reaction rate

The Amoeba Sisters explain enzymes and how they interact with their substrates. Vocabulary covered includes active site, induced fit, coenzyme, and cofactor. Also the importance of ideal pH and temperatures for enzymes are discussed.

5:10 video: extended from Study.com showing lactase example

2:45 video activation energy using snowman analogy

Enzyme video reaction

The following has been excerpted from a very popular Worthington publication which was originally published in 1972 as the Manual of Clinical Enzyme Measurements. While some of the presentation may seem somewhat dated, the basic concepts are still helpful for researchers who must use enzymes but who have little background in enzymology.