This book is awful. I am currently taking a Cell Biology class at Johns Hopkins and we are required to use this book. It is dry, uninteresting, and presents information in a very unorganized fashion. The book repeats itself many times. Also, the text often refers to figures that are on different pages in the book, requiring you to shuffle around through the pages looking for examples. The way the book presents important information is not effective, because most of the important stuff gets diluted with unimportant facts.This book might have its uses as a reference, but will not help you learn the concepts very well. I do not recommend this book.