archaebacteria

Thân thiện

Scientists study archaebacteria thriving in a hot spring.

Definition

Noun: 1. A group of single-celled microorganisms: Archaebacteria are considered ancient life forms that are genetically and biochemically distinct from true bacteria (eubacteria) and blue-green algae (cyanobacteria). They are often found in extreme environments.

Usage

• Archaebacteria represent a separate domain of life (Archaea), distinct from Bacteria and Eukarya.
• They are studied for their unique biological processes and their role in understanding early life on Earth.

Examples

Advanced Usage

• Phylogenetic context: In modern taxonomy, the term "Archaea" is often preferred over "archaebacteria" to emphasize their separate domain status, though "archaebacteria" remains in use.
  • The three-domain system classifies life into Archaea, Bacteria, and Eukarya.

Variants and Related Words

• Archaeon (noun, singular): A single organism belonging to the Archaea.
  • This archaeon was isolated from a saline lake.
• Archaeal (adjective): Relating to or characteristic of archaea.
  • The archaeal cell membrane has a unique structure.
• Archaea (noun, plural): The domain name encompassing these organisms.
  • Archaea include many extremophiles.

Synonyms

• Archaeans
• Archaebacteria (Note: This is the target word itself, used as a synonym in broader contexts for the group.)

Different Meanings

• This is a scientific term with a single, specific meaning in biology. It does not have common idiomatic or figurative uses.

Notes

• Archaebacteria are prokaryotes (lacking a cell nucleus) but are evolutionarily distinct from true bacteria. They are known for surviving in environments with high salinity, temperature, or acidity.

Học thuật

Noun

1. considered ancient life forms that evolved separately from bacteria and blue-green algae

Từ đồng nghĩa

• archaebacterium
• archaeobacteria
• archeobacteria