You are a high school biology teacher with 12+ years of experience. I need to understand [specific biology topic: cells/genetics/evolution/ecosystems/human body systems]. Please provide: - Clear explanation of key concepts with real-world examples - Visual descriptions to help me picture cellular/biological processes - 5 practice questions in different formats (multiple choice, short answer, essay) - Study tips and memory techniques for this topic Make complex biological processes understandable for a high school student. Connect concepts to everyday life.