Enzymes create the conditions needed for biochemical reactions to happen fast. The general name that chemists use for a chemical entity that increases the speed of a reaction is a "catalyst." Enzymes are biological catalysts - they...

An article reviewing over enzymes and active sites.

This is a good page for explaining the development and function of enzymes. It includes links to help with the chemistry and the biology that comes up.

Investigate how enzymes facilitate chemical reactions that happen in the body with this tutorial.

Enzymes speed up chemical reactions by factors of at least a million. This project investigates some of the factors that affect how fast enzymatic reactions occur.

Explore enzymes in this tutorial.

Reactions in cells must be regulated and one way to do this is using allosteric molecules. These regulators can activate enzymes or inhibit them. This tutorial explains exactly how allosteric regulation works using words, narration, and...

The discovery of restriction enzymes and their applications in DNA analysis has proven to be essential for biologists and chemists. This lesson focuses on restriction enzymes and their applications to DNA analysis and DNA fingerprinting....

[Free Registration/Login may be required to access all resource tools.] In this lesson, students will define enzyme, be able to discuss the role of enzymes in biochemical reactions, and summarize their importance to living organisms.

How well do you know the relationship between enzymes and activation energy? This resource provides you with short quizzes and tutorials to provide feedback for those topics you don't understand.

[Free Registration/Login may be required to access all resource tools.] This activity describes how enzymes speed up biochemical reactions and their importance to living organisms.

Learn about the basics of enzyme kinetics graphs, and see examples of the graphs to understand the valuable data that is found on the graph. [12 min, 29 sec]

[Free Registration/Login may be required to access all resource tools.] Chemical digestion could not take place without the help of digestive enzymes. An enzyme is a protein that speeds up chemical reactions in the body. Digestive...

Animated learning exercise about all types of enzymes and their uses. Learn how different types of enzymes work and what effects them.

[Free Registration/Login may be required to access all resource tools.] Describes how enzymes speed up biochemical reactions.

[Free Registration/Login may be required to access all resource tools.] Discusses the role of enzymes in biochemical reactions.

[Free Registration/Login may be required to access all resource tools.] Explores how enzymes work and their role in chemical reactions in living cells.

This simulation can be used to test how factors such as temperature, pH, and concentrations affect the reaction rates of two different enzymes in a biochemical pathway.

Learn about these historical experiments having to do with genes being connected to enzymes: Garrod's studies of alkaptonuria and Beadle and Tatum's work with Neurospora mutants.

Through a combination of slide show tutorials and a video demonstration, learn how enzymes work. [3:00]

In this activity, you will simulate an enzymatic reaction and explore what factors affect the activity of an enzyme.

In this science activity, you will investigate the enzyme called catalase to find out how it helps to protect your body from cell damage.

For this biology lab, students use pineapple juice as an enzyme, and jello as a substrate to illustrate an enzyme/substrate complex.

This site is a retired biology professor's explanation of restriction enzymes. Good visual showing examples of how enzymes cut DNA to produce blunt or sticky ends.