The field is categorized into numerous specialized disciplines, each focusing on different aspects of life: Why Study Biology & Why is Biology Important?
: All living things must capture and transform energy to survive—whether through photosynthesis in plants or consumption in animals. They must also maintain homeostasis , a stable internal environment despite external changes. Major Branches of Biology Biology
: Evolution explains both the unity and the incredible diversity of life on Earth. Through natural selection, organisms develop adaptations that improve their chances of survival and reproduction. Major Branches of Biology : Evolution explains both
: The cell is the fundamental unit of all living things. Some organisms, like bacteria, consist of a single cell, while others, like humans, are made of trillions. Some organisms, like bacteria, consist of a single
: Information is passed from one generation to the next through DNA and RNA. This universal genetic code acts as a blueprint for an organism's structure and function.