Introductory high school biology courses generally include a discussion of enzymes. Enzymes, commonly defined as biological catalysts, speed up biochemical reactions and are involved in nearly every biochemical process that occurs in a living organism. Many texts currently being used provide diagrams of enzyme action and a discussion of the "lock and key fit" of enzyme and substrate. Laboratory manuals accompanying these texts frequently indicate the usefulness of the chewed cracker experiment to demonstrate the presence and ·action of salivary amylase. Though this experiment uses an enzyme, it does not always accomplish the desired result - to enable the students to understand the catalytic action of an enzyme.
Iowa Science Teachers Journal
© Copyright 1984 by the Iowa Academy of Science
"Demonstration Model of an Organic Catalyst,"
Iowa Science Teachers Journal: Vol. 21
, Article 3.
Available at: https://scholarworks.uni.edu/istj/vol21/iss3/3