
Biology | Definition, History, Concepts, Branches, & Facts | Britannica
Mar 14, 2025 · Biology, study of living things and their vital processes that deals with all the physicochemical aspects of life. Modern principles of other fields, such as chemistry, medicine, and physics, for example, are integrated with those of biology in areas such as biochemistry, biomedicine, and biophysics.
Biology Portal | Britannica
The field of biology is subdivided into separate branches for convenience of study, though all the subdivisions share basic principles. Biology encompasses fields such as botany, genetics, marine biology, microbiology, molecular biology, and much more.
Biology and its branches | Britannica
An extremely broad subject, biology is divided into branches. The current approach is based on the levels of biological organization involved (e.g., molecules, cells, individuals, populations) and on the specific topic under investigation (e.g., structure and function, growth and development).
Biology - Evolution, Genetics, Classification | Britannica
Mar 14, 2025 · Much of the earliest recorded history of biology is derived from Assyrian and Babylonian bas-reliefs showing cultivated plants and from carvings depicting veterinary medicine.
biology - Students | Britannica Kids | Homework Help
The scientific study of living things is called biology. Biologists strive to understand the natural world and its living inhabitants—plants, animals, fungi, protozoa, algae,…
Biology - Evolution, Genetics, Ecology | Britannica
Mar 14, 2025 · evolution, theory in biology postulating that the various types of plants, animals, and other living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations. The theory of evolution is one of the fundamental keystones of modern biological theory.
Branches of Biology Portal | Britannica
The field of biology is subdivided into separate branches for convenience of study, though all the subdivisions share basic principles. Biology encompasses fields such as botany, genetics, marine biology, microbiology, molecular biology, and much more.
Biophysics | Molecular Biology, Physics & Chemistry | Britannica
The field of molecular biology is focused especially on nucleic acids (e.g., DNA and RNA) and proteins — macromolecules that are essential to life processes—and how these molecules interact and behave within cells.
Biology - Origin, Evolution, Life | Britannica
Mar 14, 2025 · Biology - Origin, Evolution, Life: If a species can develop only from a preexisting species, then how did life originate? Among the many philosophical and religious ideas advanced to answer that question, one of the most popular was the theory of spontaneous generation, according to which, as already mentioned, living organisms could originate ...
Biology - Evolution, Genetics, Species | Britannica
Mar 14, 2025 · Qualitative and quantitative analyses in biology make use of a variety of techniques and approaches to identify and estimate levels of nucleic acids, proteins, carbohydrates, and other chemical constituents of cells and tissues.