Other
Hypertextbook: Large Molecules
This is a good, in-depth reference for the study of macromolecules in biology - lipids, proteins and carbohydrates. Includes images and links to other sources as well as a quiz for students to check understanding.
Chem4kids
Chem4 Kids: Proteins
Here you can find some great information about proteins. Learn about a protein's primary structure, secondary structure, tertiary structure, and quaternary structure.
Khan Academy
Khan Academy: The Structure and Function of Globular Proteins
The structure of a machine's parts in relation to one another and the proper functioning of the machine itself, applies not just to the machines is, but also to the ones at work inside our bodies. These molecular machines, called...
Sophia Learning
Sophia: Secondary Structure of Proteins
This lesson will explain the secondary structure of a protein.
Sophia Learning
Sophia: Biology: Macromolecules: Secondary Structures of Proteins
This lesson will explain the secondary structure of a protein.