What does abiogenesis mean?

Definitions for abiogenesis
ˌeɪ baɪ oʊˈdʒɛn ə sɪs, ˌæb i oʊ-abio·gen·e·sis

This dictionary definitions page includes all the possible meanings, example usage and translations of the word abiogenesis.

Princeton's WordNet

  1. abiogenesis, autogenesis, autogeny, spontaneous generationnoun

    a hypothetical organic phenomenon by which living organisms are created from nonliving matter

Wiktionary

  1. abiogenesisnoun

    The origination of living organisms from lifeless matter; such genesis as does not involve the action of living parents; spontaneous generation.

  2. Etymology: * From abio + genesis

Wikipedia

  1. Abiogenesis

    In biology, abiogenesis (from a- 'not' + Greek bios 'life' + genesis 'origin') or the origin of life is the natural process by which life has arisen from non-living matter, such as simple organic compounds. The prevailing scientific hypothesis is that the transition from non-living to living entities on Earth was not a single event, but a process of increasing complexity involving the formation of a habitable planet, the prebiotic synthesis of organic molecules, molecular self-replication, self-assembly, autocatalysis, and the emergence of cell membranes. Many proposals have been made for different stages of the process. The study of abiogenesis aims to determine how pre-life chemical reactions gave rise to life under conditions strikingly different from those on Earth today. It primarily uses tools from biology and chemistry, with more recent approaches attempting a synthesis of many sciences. Life functions through the specialized chemistry of carbon and water, and builds largely upon four key families of chemicals: lipids for cell membranes, carbohydrates such as sugars, amino acids for protein metabolism, and nucleic acids DNA and RNA for the mechanisms of heredity. Any successful theory of abiogenesis must explain the origins and interactions of these classes of molecules. Many approaches to abiogenesis investigate how self-replicating molecules, or their components, came into existence. Researchers generally think that current life descends from an RNA world, although other self-replicating molecules may have preceded RNA. The classic 1952 Miller–Urey experiment demonstrated that most amino acids, the chemical constituents of proteins, can be synthesized from inorganic compounds under conditions intended to replicate those of the early Earth. External sources of energy may have triggered these reactions, including lightning, radiation, atmospheric entries of micro-meteorites and implosion of bubbles in sea and ocean waves. Other approaches ("metabolism-first" hypotheses) focus on understanding how catalysis in chemical systems on the early Earth might have provided the precursor molecules necessary for self-replication. A genomics approach has sought to characterise the last universal common ancestor (LUCA) of modern organisms by identifying the genes shared by Archaea and Bacteria, members of the two major branches of life (where the Eukaryotes belong to the archaean branch in the two-domain system). 355 genes appear to be common to all life; their nature implies that the LUCA was anaerobic with the Wood–Ljungdahl pathway, deriving energy by chemiosmosis, and maintaining its hereditary material with DNA, the genetic code, and ribosomes. Although the LUCA lived over 4 billion years ago (4 Gya), researchers do not believe it was the first form of life. Earlier cells might have had a leaky membrane and been powered by a naturally-occurring proton gradient near a deep-sea white smoker hydrothermal vent. Earth remains the only place in the universe known to harbor life, and fossil evidence from the Earth informs most studies of abiogenesis. The Earth was formed 4.54 Gya; the earliest undisputed evidence of life on Earth dates from at least 3.5 Gya. Fossil micro-organisms appear to have lived within hydrothermal vent precipitates dated 3.77 to 4.28 Gya from Quebec, soon after ocean formation 4.4 Gya during the Hadean.

ChatGPT

  1. abiogenesis

    Abiogenesis is the theoretical process by which life forms naturally evolve from non-living matter, such as simple organic compounds. It typically refers to the origin of life on Earth, suggesting life began from basic chemical reactions, eventually leading to complex biochemical systems and living organisms without direct divine intervention or influence.

Webster Dictionary

  1. Abiogenesisnoun

    the supposed origination of living organisms from lifeless matter; such genesis as does not involve the action of living parents; spontaneous generation; -- called also abiogeny, and opposed to biogenesis

  2. Etymology: [Gr. 'a priv. + bi`os life + ge`nesis, origin, birth.]

Wikidata

  1. Abiogenesis

    Abiogenesis or biopoiesis is a natural process by which life arises from simple organic compounds. The earliest known life on Earth existed between 3.9 and 3.5 billion years ago, during the Eoarchean Era when sufficient crust had solidified following the molten Hadean Eon. Scientific hypotheses about the origins of life may be divided into several categories. Most approaches investigate how self-replicating molecules or their components came into existence. For example, the Miller–Urey experiment and similar experiments demonstrated that most amino acids, often called "the building blocks of life", can be racemically synthesized in conditions thought to be similar to those of the early Earth. Several mechanisms have been investigated, including lightning and radiation. Other approaches focus on understanding how catalysis in chemical systems in the early Earth might have provided the precursor molecules necessary for self-replication.

Chambers 20th Century Dictionary

  1. Abiogenesis

    ab-i-o-jen′es-is, n. the origination of living by not-living matter, spontaneous generation.—adj. Abiogenet′icn. Abio′genist, one who believes in such. [Coined by Huxley in 1870; Gr. a, neg., bios, life, genesis, birth.]

The Nuttall Encyclopedia

  1. Abiogenesis

    the doctrine of spontaneous generation.

Entomology

  1. Abiogenesis

    spontaneous generation.

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Numerology

  1. Chaldean Numerology

    The numerical value of abiogenesis in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of abiogenesis in Pythagorean Numerology is: 6

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"abiogenesis." Definitions.net. STANDS4 LLC, 2024. Web. 16 Jul 2024. <https://www.definitions.net/definition/abiogenesis>.

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