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Archaea Meaning: Definition, Examples, and Translations

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archaea

[ɑːrˈkiːə ]

Definition

Context #1 | Noun

biology

A group of single-celled microorganisms that have distinct cell structure and are genetically different from bacteria.

Synonyms

archaean microbes, archaebacteria.

Examples of usage

  • Archaea are known for their ability to thrive in extreme environments such as hot springs and deep-sea hydrothermal vents.
  • Scientists study archaea to better understand the diversity of life on Earth.

Translations

To see the translation, please select a language from the options available.

Interesting Facts

Biology

  • These organisms have unique cell structures that set them apart from bacteria and eukaryotes.
  • Many archaea are extremophiles, thriving in extreme temperatures, acidity, or salinity, unlike most life forms.

Ecology

  • They play crucial roles in ecosystems, particularly in methane production and nutrient cycling.
  • Some archaea can be found in the guts of animals, helping with digestion.

Research

  • Studies on archaea offer insight into the origins of life on Earth, helping scientists understand early life forms.
  • They are being researched for their potential in biotechnology, including biofuels.

Cultural Impact

  • The discovery of archaea broadened the scope of life on Earth and paved the way for new classification systems in biology.
  • Popular science communicates the unique capabilities of archaea, inspiring interest in microbiology among the general public.

Origin of 'archaea'

Main points about word origin

  • The word originates from Greek, with 'archaios' meaning 'ancient', highlighting their long existence on Earth.
  • It was first used in scientific literature in the 1970s to categorize these unique microorganisms.

The term "archaea" was coined by Carl Woese and George E. Fox in 1977 to describe a new domain of life. Archaea were initially classified as bacteria, but Woese's research on ribosomal RNA sequences revealed that they are genetically distinct. Archaea are now recognized as one of the three domains of life, along with bacteria and eukaryotes. They play a crucial role in various ecosystems and have unique metabolic pathways that have implications for biotechnology and astrobiology.

Word Frequency Rank

Ranking #35,757, this word is encountered relatively rarely in everyday English. It might appear in literary works or specialized texts but isn't essential for general communication.