Biology | Definition, History, Concepts, Branches, & Facts | Britannica
2024年10月21日 · Biology encompasses diverse fields, including botany, conservation, ecology, evolution, genetics, marine biology, medicine, microbiology, molecular biology, physiology, and zoology. Why is biology important?
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
2024年10月21日 · Biology - Evolution, Genetics, Classification | Britannica. Biological practices among Assyrians and Babylonians. Biological knowledge of Egyptians, Chinese, and Indians. The study of the reproduction and development of organisms. …
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.
Cell | Definition, Types, Functions, Diagram, Division, Theory,
2024年10月31日 · cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other …
Biology - Evolution, Genetics, Species | Britannica
2024年10月21日 · 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.
Genetics | History, Biology, Timeline, & Facts | Britannica
2024年10月30日 · Genetics, study of heredity in general and of genes in particular. Genetics forms one of the central pillars of biology and overlaps with many other areas, such as agriculture, medicine, and biotechnology. Learn more about the history, biology, areas of …
Louis Pasteur | Biography, Inventions, Achievements, Germ Theory ...
2024年10月30日 · Louis Pasteur (born December 27, 1822, Dole, France—died September 28, 1895, Saint-Cloud) was a French chemist and microbiologist who was one of the most important founders of medical microbiology. Pasteur’s contributions to science, technology, and medicine are nearly without precedent.
Biotechnology | Definition, Examples, & Applications | Britannica
2024年10月8日 · Biotechnology, the use of biology to solve problems and make useful products. The most prominent area of biotechnology is the production of therapeutic proteins and other drugs through genetic engineering. Learn more about the development and applications of biotechnology in this article.
Microbiology | Definition, History, & Microorganisms | Britannica
2024年9月19日 · microbiology, study of microorganisms, or microbes, a diverse group of generally minute simple life-forms that include bacteria, archaea, algae, fungi, protozoa, and viruses. The field is concerned with the structure, function, and classification of such organisms and with ways of both exploiting and controlling their activities.