Enzyme Activity Lab for SBI4U: Catalase, Rate Curves, and Inhibition
A free interactive where Grade 12 Biology students pick a factor — temperature, pH, substrate, enzyme, or inhibitor — write a hypothesis, run trials, and read the rate curve that catalase produces as it splits hydrogen peroxide into water and oxygen.
The Enzyme Activity Lab runs a live simulation of catalase at work. Students pick a variable, set a range, and run trials. The lab records the rate at each value and plots the curve, so students design an experiment, collect data, and read a rate curve they built themselves.
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Enzyme Active Site Lab for SBI4U: The Catalytic Triad in Action
A free interactive where Grade 12 Biology students drag a peptide into a serine-protease active site, then change pH, temperature, and salt to watch protons hop, charges appear, and the catalytic bond form and break.
DNA Replication Lab for SBI4U: Enzymes of the Replication Fork
A free interactive where Grade 12 Biology students watch one replication fork copy DNA, then switch an enzyme off and see which job stops: helicase, topoisomerase, SSB proteins, primase, DNA polymerase I and III, or ligase.
Cell Membrane Lab for SBI4U: The Fluid Mosaic Model in Action
A free interactive where Grade 12 Biology students manipulate temperature, cholesterol, and transport proteins to see diffusion, aquaporins, and exocytosis happen on screen. Aligned to Ontario SBI4U.
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