This BioCoach activity will help you understand how gene expression is regulated in bacteria, causing genes to be turned on and off in response to environmental signals. You will find information on how genes in bacteria are grouped together in functional groups called operons, the functions of various segments of DNA in operons, how specific molecules start and stop transcription within operons, and how certain molecules affect the rate of this transcription. Animations in the activity show these processes. You can check your understanding of the lac operon by using the interactive Practice exercises and the Self-Quiz at the end of the module.
Professor Overby understands the critical role that daily homework assignments and practice play in how successfully students learn chemistry concepts and principles. He implemented Connect Chemistry in order to give his students immediate feedback as they complete their homework assignments. To ensure that students stay on task, 15% of their final grade is based on upon these assignments within Connect. As a result, Professor Overby's students are earning more A's and B's than prior to using Connect Chemistry. Plus Overby has seen his class average rise to 46/70 on the American Chemical Society national standardized exam, surpassing the national average of /70.