This product allows AP Bio (or honors bio) students to investigate gene regulation in prokaryotes using the PhET simulation of the lac operon as an example. The worksheet walks students through each step, and how to use the simulation to learn how prokaryotes regulate gene expression. This product includes: A two page worksheet (~one class period) to go along with the simulationA link to the PhET simulationAn answer keyIf you enjoy this, leave a good review and check out other products like it