What Is Life - Guide to Biology with Physiology Update 5th edition by Phelan

What Is Life? A Guide to Biology with Physiology Update, 5th edition by Jay Phelan offers an engaging introduction to core biological concepts with added emphasis on human physiology. Published by Macmillan, this textbook connects evolution, genetics, cells, ecology, and body systems through clear explanations and real-world examples. Its approachable style is designed for introductory biology courses, helping students understand how scientific ideas apply to everyday life and health. The physiology update makes it especially useful for courses that bridge general biology with human body function.