Homeostasis is the property of an open system, especially living organisms, to regulate its internal environment to maintain a stable, constant condition, by means of multiple dynamic equilibrium adjustments, controlled by interrelated regulation mechanisms. The term was coined in 1932 by Walter Cannon from the Greek homo (same, like) and stasis (to stand, posture). Homeostasis - Overview. The term is most often used in the sense of biological homeostasis. Multicellular organisms require a hom ...

Including:

• Homeostasis - Overview
• Homeostasis - Properties of homeostasis
• Homeostasis - Mechanisms of homeostasis: feedback
• Homeostasis - Ecological homeostasis
• Homeostasis - Biological homeostasis
• Homeostasis - Homeostasis in the human body
• Homeostasis - Other fields
• Homeostasis - Examples

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Including:

• Biology - Biological Phenomena
• Biology - Branches of Biology
• Biology - Principles of biology
• Biology - Universality: Biochemistry cells and the genetic code
• Biology - Evolution: The central principle of biology
• Biology - Diversity: The variety of living organisms
• Biology - Continuity: The common descent of life
• Biology - Homeostasis: Adapting to change
• Biology - Interactions: Groups and environments
• Biology - Scope of biology
• Biology - Structure of life
• Biology - Physiology of organisms
• Biology - Diversity and evolution of organisms
• Biology - Interactions of organisms
• Biology - History of the word biology
• Biology - History
• Biology - Related topics

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The term is most often used in the sense of biological homeostasis. Multicellular organisms require a homeostatic internal environment, in order to live; many environmentalists believe this principle also applies to the external environment. Many ecological, biological, and social systems are homeostatic. They oppose change to maintain equilibrium. If the system does not succeed in reestablishing its balance, it may ultimat ...

See also:

Homeostasis, Homeostasis - Overview, Homeostasis - Properties of homeostasis, Homeostasis - Mechanisms of homeostasis: feedback, Homeostasis - Ecological homeostasis, Homeostasis - Biological homeostasis, Homeostasis - Homeostasis in the human body, Homeostasis - Other fields, Homeostasis - Examples

Read more here: » Homeostasis: Encyclopedia II - Homeostasis - Overview

Today, dealing with change is perceived as a huge challenge. In fact, 'change management' has become a major preoccupation of leaders in all walks of life, including in government, business and institutions.

Employees too are grappling with changes in the work place. More than ever before, the number of people individually striving to learn more and grow at a personal level is increasing by leaps and bounds. So they have to learn to adapt themselves to changing situations. Most of us are fairly quick at learning, at cultivating new tastes and fashions. Yet, our first reaction to change is always tinged with suspicion and caution, and in some cases, resistance.

(See also: Change, Faith and Belief, Spiritual Guidance, God and Religion, Peace on Earth, Peace of Mind, Love and Happiness, Life and Beyond, Body Mind and Soul)

A biological adaptation is an anatomical structure, physiological process or behavioral trait of an organism that has evolved over a period of time by the process of natural selection such that it increases the expected long-term reproductive success of the organism. The term adaptation is also sometimes used as a synonym for natural selection, but most biologists discourage this usage. Adaptation can be viewed as taking place over geological time, or ...

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Complex adaptive systems, are a special case of complex systems. They are complex in that they are diverse and made up of multiple interconnected elements and adaptive in that they have the capacity to change and learn from experience. The term complex adaptive systems was coined at the interdisciplinary Santa Fe Institute (SFI), by John H. Holland, Murray Gell-Mann and others. John H. Holland is one of the inventors of evolutionary computation and genetic algor ...

Including:

• Complex adaptive systems - Definitions
• Complex adaptive systems - Properties of CAS
• Complex adaptive systems - Graphic
• Complex adaptive systems - Researchers and scientists

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Chemical biology is a scientific discipline spanning chemistry and biology that employs synthetic chemistry to study and manipulate biological systems. Chemical biology - Introduction. Chemical biology attempts to answer biological questions by directly probing living systems at the chemical level. In contrast to biochemistry, genetics, and molecular biology, where mutagenesis can provide a new version of the organism or cell of interest, chemical biology probes systems in vitro and in vivo wi ...

Including:

• Chemical biology - Introduction
• Chemical biology - Systems of Interest
• Chemical biology - The Proteome
• Chemical biology - Glycobiology
• Chemical biology - Combinatorial Chemistry
• Chemical biology - Employing Biology
• Chemical biology - Research Institutes and Graduate Programs

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Chang'an listen ▶ (help·info) (Simplified: 长安; Traditional: 長安; Hanyu Pinyin: Cháng'ān; Wade-Giles: Ch'ang-an) is the ancient capital of more than ten dynasties in China. "Chang'an" means "Perpetual Peace" in Classical Chinese. (During the short-lived Xin Dynasty, the name was changed to 常安 -- pronounced the same way, but with the meaning of " ...

Including:

• Chang'an - External link

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Adaptation and Natural Selection: A Critique of Some Current Evolutionary Thought is a 1966 book by the American George C. Williams on evolutionary biology. In it, Williams outlines a gene-centric view of evolution, disparaging group selection and progress. This viewpoint was subsequently adopted by the scientific community in the Williams revolution. The book takes its title from a lecture by George Gaylord Simpson in January 1947 at the University of Princeton. The concepts were popularised amongst th ...

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Calcium plays a vital role in the anatomy, physiology and biochemistry of organisms and of the cell, particularly in signal transduction pathways. The skeleton acts as a major mineral storage site for the element and releases Ca2+ ions into the bloodstream under controlled conditions. Circulating calcium is either in the free, ionized form or bound to blood proteins such as albumin. The hormone secreted by the parathyroid gland, parathyroid hormone, regulates the resorption of Ca2+ from bone. Calcium in bi ...

Including:

• Calcium in biology - Measuring Ca2+ in living tissue
• Calcium in biology - Organs and tissues
• Calcium in biology - Cell biology
• Calcium in biology - Calcium in plants
• Calcium in biology - Structural roles
• Calcium in biology - Cell signalling
• Calcium in biology - Food sources

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Change, the quality of impermanence and flux, has had a chequered history as a concept. In ancient Greek philosophy, while Heraclitus saw change as ever-present and all-encompassing, Parmenides virtually denied its existence. Ovid produced a classic thematic handling of change as metamorphosis in his Metamorphoses. Ptolemaic astronomy envisioned a largely static universe, with erratic change confined to less worthy spheres. Medieval thought fostered great respect for authority and revelation, s ...

Including:

• Change - See Also

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In biology, a blowhole is the hole at the top of a Cetacean's head through which the animal breathes air. It is homologous with the nostril of other mammals. As whales reach the water surface to breathe, they will forcefully expel air through the blowhole. The exhale is released into the comparably lower-pressure, colder atmosphere, and any water vapor condenses. This is often visible from far away as a white splash.

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In marine science, coral biology is the study of various aspects of coral biology like cellular biology, molecular biology and ecology of coral behaviour. Since coral reefs are one of the most important ecosystems in terms of biodiversity and there is increased destruction of their habitat all over the world due to various human and natural effects, it has become increasingly necessary to under ...

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Assimilation (from similis, lat. = similar), in biology, designates the process of the transformation of external substances and materials into substances and materials internal to the body. Examples of assimilation are: By mean of photosynthesis, carbon dioxide and water are transformed into a number of organic molecules in plant cells. Nitrogen fixation from the soil into organic molecules by symbiotic bacteria which live in the roots of certain plants, such as Leguminosae. The absorption of nutrients into the body after digestion in the intestine a ...

Including:

• Assimilation biology - Related topics

Read more here: » Assimilation biology: Encyclopedia - Assimilation biology

Adaptive radiation describes the rapid speciation of a single or a few species to fill many ecological niches. This is an evolutionary process driven by mutation and natural selection. Adaptive radiation often occurs when a species is introduced to a new ecosystem, or when a species can survive in an environment that was unreachable before. For example, Darwin's finches on the Galapagos islands developed from a single species of finches that reached the islands. Other examples include the introduction of predatory mammals to Au ...

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Catagenesis is an archaic term from evolutionary biology referring to evolutionary directions that were considered "retrogressive." It was a term used in contrast to anagenesis, which in present usage denotes the evolution of a single population into a new form without branching lines of descent. Cladogenesis is the term used for branching lines of descent, i.e., when the evolutionary origin of a new form is not accompanied by the disappearance of the ancestral form. Other related archivesCla

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Vagrancy is a phenomenon in biology whereby individual animals appear well outside their normal range; individual animals which exhibit vagrancy are known as vagrants. The term accidental is sometimes also used. There are a number of factors which might cause an individual to become a vagrant - genetic factors and weather conditions are two - but the causes are overall poorly understood. Vagrancy can be a precursor to colonisation if individuals survive. Vagrancy is known to occur in birds, insects, mammals ...

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Two structures in biology are said to be analogous if they perform the same or similar function by a similar mechanism. For example, the wings of insects and the wings of birds. These similar structures may have evolved through different pathways, a process known as convergent evolution, or may be homologous. The concept of analogy is contrasted with that of homology, which refers to two structures that share a common ancestor. They may retain the function of the common ancestor, or they may have evolved to fulfil quite distinc

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Alien biology - Definition. In biology, an alien refers to an organism that is introduced into a foreign locale and subsequently becomes naturalized, as in the term alien species. Words with similar meaning in biology include exotic, adventive, introduced, and naturalized. These terms contrast with terms such as native, indigenous, and endemic. Introduced species, Invasive species Alien biology - Problems. Including:

• Alien biology - Definition
• Alien biology - Problems

Read more here: » Alien biology: Encyclopedia - Alien biology

An alpha male or alpha female is the individual in the community whom the others follow and defer to. Humans and their nearest species-relatives, the chimpanzees, show deference to the alpha of the community by ritualized gestures such as bowing, allowing the alpha to walk first in a procession, or standing aside when the alpha challenges. Canines also show deference to the alpha pair in their pack, by allowing them to be the first to eat and, usually, the only ...

Including:

• Alpha biology - Source

Read more here: » Alpha biology: Encyclopedia - Alpha biology