This activity guides the analysis of a published scientific figure from a study that investigated genetic factors contributing to skin color differences, particularly within African populations.

This short video explores how the symbiotic relationship between certain plants and fungi allows these organisms to survive in very hot temperatures.

This video describes the case of a patient with retinitis pigmentosa (RP), a progressive disease that leads to blindness, and how physician-scientist Dr. Ed Stone approached the search for the causal mutation.

This short video explores the secrets behind termites’ power to digest an abundant source of food: wood.

This short video explores a method for using bacteria to prevent mosquitoes from transmitting dengue virus to humans.

This activity complements the video Virus Hunter: Monitoring Nipah Virus in Bat Populations. Students explore cases of Nipah virus infection, analyze evidence, and make calculations and predictions based on data.

This activity complements the animated short video Seeing the Invisible. Students explore concepts related to relative size and scale using cards of cells and microorganisms.

This activity outlines two demonstrations that model how enveloped and nonenveloped viruses are released from infected cells.

This demonstration models the first step of the HIV life cycle: the binding of HIV envelope proteins to receptors on human helper T cells.

This activity allows students to model how the anti-HIV drug AZT (azidothymidine) interferes with the process of viral replication.

In this hands-on activity, students model how a double-stranded DNA copy of the HIV genome is integrated into the host cell DNA.

This demonstration models how the HIV protease enzyme functions and how its activity is blocked by a class of anti-HIV drugs.