
Biology | Definition, History, Concepts, Branches, & Facts | Britannica
Dec 5, 2025 · Biology is a branch of science that deals with living organisms and their vital processes. Biology encompasses diverse fields, including botany, conservation, ecology, …
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, …
Biology - Evolution, Genetics, Classification | Britannica
Dec 5, 2025 · Biology - Evolution, Genetics, Classification: There are moments in the history of all sciences when remarkable progress is made in relatively short periods of time.
Biology - Aristotle, Organisms, Cells | Britannica
Dec 5, 2025 · Biology - Aristotle, Organisms, Cells: Around the middle of the 4th century bce, ancient Greek science reached a climax with Aristotle, who was interested in all branches of …
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, …
Cell | Definition, Types, Functions, Diagram, Division, Theory,
Dec 10, 2025 · 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 …
Biology - Evolution, Genetics, Species | Britannica
Dec 5, 2025 · Biology - Evolution, Genetics, Species: In his theory of natural selection, which is discussed in greater detail later, Charles Darwin suggested that “survival of the fittest” was the …
Biophysics | Molecular Biology, Physics & Chemistry | Britannica
Biology, which may be viewed as a general subject pervading biophysical study, is evolving from a purely descriptive science into a discipline increasingly devoted to understanding the nature …
Cell - Structure, Organelles, Metabolism | Britannica
Dec 10, 2025 · Roger Williams University Open Publishing - Introduction to Molecular and Cell Biology - Introduction to Cells National Center for Biotechnology Information - The Origin and …
Reproduction | Definition, Examples, Types, Importance, & Facts ...
Dec 16, 2025 · What is reproduction in biology? Why is reproduction important for living things? What are the main types of reproduction? How does asexual reproduction work?