Classroom Resources

In this phenomenon-driven activity, students investigate how cells are signaled to make melanin and explain how mutations in melanin pathway proteins affect the coat color of various organisms.

This interactive module introduces the anatomy of the immune system and walks through the timeline of a typical immune response.

This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. The module also shows how mutations in genes that encode cell cycle regulators can lead to the development of cancer.

This tutorial describes the symbiosis between the Hawaiian bobtail squid and bioluminescent bacteria.

This tutorial describes how neurons generate action potentials, and how scientists measure neuronal activity and record the firing of individual neurons.

This animation shows how neurons send and receive signals to communicate with one another at contact points called synapses.

This animation shows how a tumor forms, recruits blood vessels, and enters metastasis.

This interactive, modular lab explores techniques for identifying and recording the electrical activities of neurons, using the leech as a model organism.