1 - 12 of 36 results
ATP Synthesis

This animation shows how the proton gradient across the mitochondrial membrane powers the ATP synthase enzyme to make ATP. It is the third of three animations about cellular respiration.

Electron Transport Chain

This animation shows how the enzyme complexes of the electron transport chain harvest energy from cofactor molecules to pump protons across the mitochondrial membrane and establish a chemical gradient. It is the second of three animations about cellular respiration.

Citric Acid Cycle

This animation shows the reactions of the citric acid cycle, which splits off carbon atoms and generates energy-rich reduced forms of cofactor molecules. It is the first of three animations about cellular respiration.

Scientist Role Models

In this activity, students find a scientist with whom they can relate in some way and then explore and reflect upon the impact of that scientist’s work.

Modeling the Structure of DNA

In this activity, students build a paper model of DNA and use their model to explore key structural features of the DNA double helix. This activity can be used to complement the short film The Double Helix.


This multipart animation series explores the process of photosynthesis and the structures that carry it out.

Understanding Global Change

This interactive module allows students and educators to build models that explain how the Earth system works. The Click & Learn can be used to show how Earth is affected by human activities and natural phenomena.

Cystic Fibrosis Mechanism and Treatment

This animation shows how mutations in an ion channel protein lead to the genetic disease cystic fibrosis. The animation also discusses how research on this protein has been used to develop treatments for the disease.

BCR-ABL: Protein Structure and Function

This tutorial describes the structure and function of the cancer-causing protein BCR-ABL. It also shows how drugs targeting this protein can help treat chronic myeloid leukemia (CML), a cancer of the white blood cells.

Activity for The Guide: A Biologist in Gorongosa

This activity explores conservation biology topics presented in the short film The Guide: A Biologist in Gorongosa. This film tells the story of Tonga Torcida, a young man who discovers his passion for science in the newly revitalized Gorongosa National Park in Mozambique.

The Guide: A Biologist in Gorongosa

This film is set in war-torn Gorongosa National Park in Mozambique, a protected area that has been the subject of a large-scale restoration project. The film tells the story of a young man from the local community who discovers a passion for science after meeting world-renowned biologist E.O.


This model shows the structure of the protein BCR-ABL, which causes a type of cancer called chronic myeloid leukemia.