ⓘ Life - Life, Biological organisation, Carbon-based life, Chirality, Coleridges theory of life, extension ..

Life

Life is a characteristic that distinguishes physical entities that have biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased, or because they never had such functions and are classified as inanimate. Various forms of life exist, such as plants, animals, fungi, protists, archaea, and bacteria. Biology is the science concerned with the study of life. There is currently no consensus regarding the definition of life. One popular definition is that organisms are open systems that maintain homeostasis, are compos ...

Biological organisation

Biological organization is the hierarchy of complex biological structures and systems that define life using a reductionistic approach. The traditional hierarchy, as detailed below, extends from atoms to biospheres. The higher levels of this scheme are often referred to as an ecological organization concept, or as the field, hierarchical ecology. Each level in the hierarchy represents an increase in organizational complexity, with each "object" being primarily composed of the previous levels basic unit. The basic principle behind the organization is the concept of emergence - the propertie ...

Carbon-based life

Carbon is a primary component of all known life on Earth, representing approximately 45–50% of all dry biomass. Carbon compounds occur naturally in great abundance on Earth. Complex biological molecules almost always consist of carbon atoms bonded with other elements, especially oxygen and hydrogen and frequently also nitrogen, phosphorus, and sulfur. Because it is lightweight and relatively small in size, carbon molecules are easy for enzymes to manipulate. It is frequently assumed in astrobiology that if life exists elsewhere in the Universe, it will also be carbon-based. Critics refer t ...

Chirality

Chirality is a property of asymmetry important in several branches of science. The word chirality is derived from the Greek χειρ, "hand," a familiar chiral object. An object or a system is chiral if it is distinguishable from its mirror image; that is, it cannot be superposed onto it. Conversely, a mirror image of an achiral object, such as a sphere, cannot be distinguished from the object. A chiral object and its mirror image are called enantiomorphs Greek, "opposite forms" or, when referring to molecules, enantiomers. A non-chiral object is called achiral sometimes also amphichiral and c ...

Coleridge's theory of life

Romanticism grew largely out of an attempt to understand not just inert nature, but also vital nature. Romantic works in the realm of art and Romantic medicine were a response to the general failure of the application of method of inertial science to reveal the foundational laws and operant principles of vital nature. German romantic science and medicine sought to understand the nature of the life principle identified by John Hunter as distinct from matter itself via Johan Friedrich Blumenbachs Bildungstrieb and Romantic medicines Lebenskraft, as well as Roschlaubs development of the Bruno ...

Life extension

Life extension is the idea of extending the human lifespan, either modestly – through improvements in medicine – or dramatically by increasing the maximum lifespan beyond its generally settled limit of 125 years. The ability to achieve such dramatic changes, however, does not currently exist. Some researchers in this area, and "life extensionists", "immortalists" or "longevists" those who wish to achieve longer lives themselves, believe that future breakthroughs in tissue rejuvenation, stem cells, regenerative medicine, molecular repair, gene therapy, pharmaceuticals, and organ replacement ...

Encyclopedic dictionary

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Pino - logical board game which is based on tactics and strategy. In general this is a remix of chess, checkers and corners. The game develops imagination, concentration, teaches how to solve tasks, plan their own actions and of course to think logically. It does not matter how much pieces you have, the main thing is how they are placement!

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