Enzymes
Quick Catalase Lab (Virtual)
A 15-minute virtual version of the liver and hydrogen peroxide lab: change temperature, pH, and liver amount, run trials, and graph the means.
Bio Simulations
Interactive biology simulations for classroom practice and study.
Hands-on labs
Labs & Activities
Student procedures with data tables and graphs: catalase, apple browning, pineapple and gelatin, organelle speed dating, and a natural selection lab.
Enzymes
Enzyme Diversity
Explore relationships among enzymes, substrates, and products.
Cell Biology
Membranes
Explore membrane permeability and osmosis with an interactive classroom simulator.
Cell Biology · Osmosis
Red Blood Cell Osmoregulation
Compare animal and plant cells in hypertonic, isotonic, and hypotonic environments while tracking solute concentration and water movement.
Evolution · BIO.4.1
Chemical vs. Organic Evolution
Slide through nine steps from inorganic gases and Miller–Urey to the first cells, oxygen, and endosymbiosis, and see where chemical evolution ends and organic evolution begins.
Cellular Energy
Respiration
Investigate cellular respiration concepts with an interactive bench-style simulation.