Yes, prokaryotes are always unicellular organisms.
According to the provided reference, a key distinction between prokaryotes and eukaryotes lies in their cellularity.
- Prokaryotes are exclusively unicellular, meaning they consist of a single cell.
- Eukaryotes, on the other hand, can be either unicellular (like many protists) or multicellular.
Here's a table summarizing the cellularity difference:
| Cell Type | Cellularity | Example(s) |
|---|---|---|
| Prokaryotes | Always Unicellular | Bacteria, Archaea |
| Eukaryotes | Unicellular or Multicellular | Protists (unicellular), Animals (multicellular), Plants (multicellular), Fungi (mostly multicellular) |
Even though prokaryotes lack a nucleus, a defining feature of eukaryotes, they still contain genetic information necessary for their survival and function as single-celled organisms.
