This resource includes six modules on the topic of cellular respiration. These include the following: Introduction to Cellular Respiration Steps of cellular respiration Glycolysis Pyruvate oxidation and the citric acid cycle Oxidative phosphorylation Variations on cellular respiration (fermentation, regulation, etc.) Content modules include videos, articles, figures, and illustrations, though the majority are videos. Users/students can also ask questions at the end of each module, and a the community of users have the option to volunteer answers to help clarify understanding or discuss the question further.