ures lively, clear writing paired with exceptional illustrations and Dynamic Figures in the Norton Illumine Ebook, making it the ideal textbook for a first course in cell biology. The Sixth Edition incorporates new research throughout, highlighting emerging research areas like COVID-19. Check Your Understanding questions with rich answer-specific feedback throughout each chapter in the Illumine Ebook allow students to assess their reading comprehension, while Smartwork problems provide the opportunity for concept application and practice.