About 52 results
Open links in new tab
  1. Biology | Definition, History, Concepts, Branches, & Facts | Britannica

    Mar 20, 2026 · 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 …

  2. Biological psychology | Neuroscience, Behavior & Mental Health

    biological psychology, the study of the physiological bases of behaviour. Biological psychology is concerned primarily with the relationship between psychological processes and the underlying …

  3. Biochemistry | Definition, History, Examples, Importance, & Facts ...

    Mar 6, 2026 · Biochemistry is the study of the chemical substances and processes that occur in plants, animals, and microorganisms and of the changes they undergo during development and life.

  4. Botany | Definition, History, Branches, & Facts | Britannica

    Botany, branch of biology that deals with the study of plants, including their structure, properties, and biochemical processes. The principles and findings of botany have provided the base for such …

  5. Science | Definition, Disciplines, & Facts | Britannica

    Apr 11, 2026 · The biological sciences —such as biology and medicine —study the organic world of life and its processes. The social sciences study the social and cultural aspects of human behavior. …

  6. Evolution | Definition, History, Types, & Examples | Britannica

    Apr 13, 2026 · Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to …

  7. Cell - Molecules, Structure, Biology | Britannica

    4 days ago · Cell - Molecules, Structure, Biology: Cells are largely composed of compounds that contain carbon. The study of how carbon atoms interact with other atoms in molecular compounds forms the …

  8. Nucleic acid | Definition, Function, Structure, & Types | Britannica

    Mar 20, 2026 · Nucleic acids are naturally occurring chemical compounds that serve as the main information-carrying molecules of the cell. They play a central role in determining the inherited …

  9. Classification | biology | Britannica

    Classification, in biology, the establishment of a hierarchical system of categories on the basis of presumed natural relationships among organisms. The science of biological classification is …

  10. Variation | Definition, Examples, & Facts | Britannica

    Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental …