Each unit in the Study Guide connects concepts from the "Unseen Life on Earth" video programs to Tortora/Funke/Case Microbiology: An Introduction, Sixth Edition to form an integrated learning package. Students are encouraged to become active learners through a variety of tools such as labeling figures, concept mapping, and review questions. Appropriate exercises and activities from the text and companion website, Student Tutorial CD-ROM, and Bacteria ID CD-ROM are also included.