prokaryotic
Học thuậtThân thiện
Definition
Adjective: 1. Relating to or characteristic of a prokaryote: Describes organisms, specifically cells, that do not have a membrane-bound nucleus or other membrane-bound organelles. The genetic material (DNA) in these cells is not enclosed within a nuclear envelope.
Usage
The adjective "prokaryotic" is used to classify and describe the fundamental cellular structure of organisms such as bacteria and archaea. It is primarily a scientific and biological term.
Examples
- Scientific Description:
- Bacteria are prokaryotic organisms.
- The prokaryotic cell structure is simpler than that of a eukaryotic cell.
- This microbe has a typical prokaryotic genome, with a single circular chromosome.
Advanced Usage
- Comparative Biology: Used to contrast with "eukaryotic."
- The main difference between prokaryotic and eukaryotic cells is the presence of a nucleus.
Variants and Related Words
- Prokaryote (noun): An organism composed of a prokaryotic cell (e.g., a bacterium).
- Prokaryotes are found in almost every environment on Earth.
- Prokaryotically (adverb): In a manner relating to prokaryotes. (This form is rare in general use but exists in technical literature).
Synonyms
- Non-nucleated (in a specific cellular context)
- Bacterium-like (in a very general, non-technical sense; imprecise)
Antonyms
- Eukaryotic (having cells with a membrane-bound nucleus)
Adjective
- having cells that lack membrane-bound nuclei