CK-12 Foundation
Ck 12: Hormones
[Free Registration/Login may be required to access all resource tools.] In the following online lesson students will learn to explain how hormones work by binding to receptors of target cells.
Khan Academy
Khan Academy: Ligands & Receptors
Article looks at different types of receptors and ligands, seeing how they interact to turn information from outside the cell into a change inside the cell.
McGraw Hill
Glencoe: Biology: The Endocrine System Posttest
A five-question post test over the endocrine system. After students submit answers, they can review their results.
Other
University of Cincinnati Clermont College of Biology: The Endocrine System
A comprehensive approach to the endocrine system, broken down by gland and complete with bold-face vocabulary terms. A perfect supplement to classroom notes and activities.
CK-12 Foundation
Ck 12: Biology: Endocrine System Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on the endocrine system.