This pioneering text combines research-focused storytelling with the Socratic method to get readers to think like practicing scientists. Each page of the book is designed in the spirit of active learning, asking readers to apply critical thinking skills as they learn key concepts. Accounts of real researchers designing and analyzing real experiments, carefully punctuated by thoughtful questions and exercises, train introductory readers in the process of DOING biology. Biology and the Tree of Life, Priority: BPlant Form and Function, Water and Sugar Transport in Plants, Plant Nutrition, Plant Sensory Systems, Signals, and Responses, Plant Reproduction, Animal Form and Function, Water and Electrolyte Balance in Animals, Animal Nutrition, Gas Exchange and Circulation, Electrical Signals in Animals, Animal Sensory Systems and Movement, Chemical Signals in Animals, Animal Reproduction, The Immune System in Animals. For all readers interested in biological science.