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Apuntes

# Introduction to Biology Biology is the natural science that studies life and living organisms. It explores how organisms grow, function, evolve, and interact with each other and their environment. ## Biology Branches • **Botany**: The scientific study of plants. • **Zoology**: The scientific study of animal behavior and physiology. • **Microbiology**: The study of microorganisms. • **Genetics**: The study of heredity. • **Ecology**: The study of interactions between living organisms and their ecosystems. • **Physiology**: The study of biological processes and functions. --- # Body Systems ## What is a Body System? A body system is a collection of parts that work together to serve a common purpose, such as growth, reproduction, and survival. Each part of a system depends on the other parts to perform tasks that cannot be achieved by single parts acting alone. ## 12 Body Systems and Their Functions • **Respiratory**: Exchange of oxygen and carbon dioxide. • **Nervous**: Sensing and processing information, controlling body activities. • **Muscular**: Movement of the body, production of heat. • **Skeletal**: Structural support and protection, production of blood cell...