Study GuideBiology–The Science of Biology1. Introduction to BiologyBiologyis the science of life. Simply put, it is the study of living things and how they work. From tinycells to large animals and plants, biology helps us understand what makes life possible.1.1 What Does Biology Study?Biology looks at life from many different angles:•Cells–All living things are made of cells. Biology studies how cells are structured and howthey function.•Energy and metabolism–Living organisms need energy to grow, move, and survive.Biology explains how this energy is obtained and used.•Genetics and inheritance–Biology explores how traits are passed from parents to offspringthrough genes.•Evolution and diversity–It also examines how living organisms have changed over timeand why there is such a wide variety of life on Earth.Biologists studymicroorganisms, plants, and animals, focusing on how their structures supporttheir everyday activities. This helps explain how living things survive, grow, and interact with theirsurroundings.1.2 Biology and Other SciencesBiology does not stand alone. It is closely connected tochemistry and physics. The chemical andphysical laws that apply to non-living matter also apply to living organisms. For example, chemicalreactions power life processes, and physical forces affect movement and structure.1.3 Branches of BiologyBiology is a broad subject with many specialized areas. These can be grouped into two maincategories:practical biologyandtheoretical biology.Preview Mode
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