procaryotic

Thân thiện

A simple procaryotic cell is shown in a biology textbook diagram.

Definition

1. Adjective:
   • Having cells that lack membrane-bound nuclei: Describes organisms, specifically prokaryotes, whose cells do not contain a nucleus enclosed within a nuclear membrane. Their genetic material (DNA) is typically found in a single, circular chromosome located in a region of the cell called the nucleoid.

Usage Examples

• Adjective:
  • Bacteria are procaryotic organisms.
  • The procaryotic cell structure is simpler than that of eukaryotic cells.
  • This characteristic procaryotic feature distinguishes them from plants and animals.

Advanced Usage

• Scientific Classification: The term is primarily used in biological and microbiological contexts to classify life forms into one of the two fundamental categories: prokaryotes (procaryotic) and eukaryotes (eukaryotic).
  • The domain Archaea consists of procaryotic organisms often found in extreme environments.

Variants and Related Words

• Prokaryotic (adj): The more common modern spelling, synonymous with "procaryotic."
  • Prokaryotic cells have no mitochondria.
• Prokaryote (n): An organism with procaryotic cells.
  • A bacterium is a type of prokaryote.
• Eukaryotic (adj): The antonym, describing cells with a membrane-bound nucleus.

Synonyms

• Non-nucleated (in a specific biological sense, though less precise)
• Bacterial (when referring specifically to bacteria, which are procaryotic, but this is not a perfect synonym as some procaryotes are not bacteria)

Notes on Usage

• The spelling "procaryotic" is an accepted variant, but "prokaryotic" is more prevalent in contemporary scientific literature.
• The term is almost exclusively used in technical, academic, or educational contexts related to biology.

Học thuật

Adjective

1. having cells that lack membrane-bound nuclei

Từ đồng nghĩa

• prokaryotic