As a result of the development of increasingly powerful and precise laboratory instruments and techniques, it is possible to understand and define with high precision and accuracy not only the ultimate physiochemical organization (ultrastructure) of the molecules in living matter but also the way living matter reproduces at the molecular level. The modern tendency toward cross-disciplinary research and the unification of scientific knowledge and investigation from different fields has resulted in significant overlap of the field of biology with other scientific disciplines. Population biology deals with groups or populations of organisms that inhabit a given area or region. How to use point of origin in a sentence. Hence, it is the point of attachment which is relatively fixed. The origin of life is a result of a supernatural event—that is, one irretrievably beyond the descriptive powers of physics, chemistry, and other science. Before that time, the individual organism was studied as a whole in a field known as organismic biology; that area of research remains an important component of the biological sciences. Post the Definition of point of origin to Facebook, Share the Definition of point of origin on Twitter, ‘Fascism’: The Word’s Meaning and History. Those broadly based levels—molecules, cells, whole organisms, and populations—may be further subdivided for study, giving rise to specializations such as morphology, taxonomy, biophysics, biochemistry, genetics, epigenetics, and ecology. © 2001-2020 BiologyOnline. Biology encompasses diverse fields, including botany, conservation, ecology, evolution, genetics, marine biology, medicine, microbiology, molecular biology, physiology, and zoology. Biological practices among Assyrians and Babylonians, Biological knowledge of Egyptians, Chinese, and Indians, Theories about humankind and the origin of life, The Arab world and the European Middle Ages, The discovery of the circulation of blood, The establishment of scientific societies, The use of structure for classifying organisms, The development of comparative biological studies, The study of the reproduction and development of organisms, Important conceptual and technological developments, Intradisciplinary and interdisciplinary work, https://www.britannica.com/science/biology, biology - Children's Encyclopedia (Ages 8-11), biology - Student Encyclopedia (Ages 11 and up). Biology is subdivided into separate branches for convenience of study, though all the subdivisions are interrelated by basic principles. Accessed 19 Oct. 2020. All Rights Reserved. Definition noun, plural: origins (1) The birth, existence, or beginning; starting point. There is not only unity of basic living substance and functioning but also unity of origin of all living things. The content on this website is for information only.
Modern principles of other fields—chemistry, medicine, and physics, for example—are integrated with those of biology in areas such as biochemistry, biomedicine, and biophysics. (2) The cause; that which causes something to arise. Our editors will review what you’ve submitted and determine whether to revise the article.
The Origin of Life Humans have adopted many theories regarding the origin of life over the course of our time on Earth. 'Nip it in the butt' or 'Nip it in the bud'? In contrast, bacterial cells do not contain organelles. Especially crucial to those advances was the rise of genomics in the late 20th and early 21st centuries. Included at that level are studies of the roles that specific kinds of plants and animals play in the complex and self-perpetuating interrelationships that exist between the living and the nonliving world, as well as studies of the built-in controls that maintain those relationships naturally. Organisms were “hand-made” to be perfectly adapted to their environment and, therefore, did not change over time. It is not intended to provide medical, legal, or any other professional advice. She joined Britannica in 2006 and... A researcher using a microscope to examine a specimen in the laboratory. During muscular contraction, the origin of the muscle does not move. If, however, life originated on Earth more than once in the past, the fact that all organisms have a sameness of basic structure, composition, and function would seem to indicate that only one original type succeeded. Please select which sections you would like to print: Corrections? It delves into the development of plant roots, the root structure, and the major regions of a plant root. All, for example, are composed of basic units known as cells and of the same chemical substances, which, when analyzed, exhibit noteworthy similarities, even in such disparate organisms as bacteria and humans. Since then, the evolutionary path has proved to be nothing short of phenomenal.
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