Book excerpt: Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. The new Must Know series is like a lightning bolt to the brain Every school subject has must know ideas, or essential concepts, that lie behind it. This book will use that fact to help you learn in a unique way. Most study guides start a chapter with a set of goals, often leaving the starting point unclear. In Must Know High School Biology, however, each chapter will immediately introduce you to the must know idea, or ideas, that lie behind the new biology topic. As you learn these must know ideas, the book will show you how to apply that knowledge to solving biology questions. Focused on the essential concepts of biology, this accessible guide will help you develop a solid understanding of the subject quickly and painlessly. Clear explanations are accompanied by numerous examples and followed with more challenging aspects of biology. Practical exercises close each chapter and will instill you with confidence in your growing biology skills. Must Know High School Biology features: •Each chapter begins with the must know ideas behind the new topic•Extensive examples illustrate these must know ideas•Students learn how to apply this new knowledge to problem solving•250 practical review questions instill confidence•IRL (In Real Life) sidebars present real-life examples of the subject at work in culture, science, and history•Special BTW (By the Way) sidebars provide study tips, exceptions to the rule, and issues students should pay extra attention to•Bonus app includes 100 flashcards to reinforce what students have learned