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  • Prokaryotic Cells: Bacteria & Archaea - Definition & Examples
    All organisms classified as bacteria and archaea have prokaryotic cells.

    Here's a breakdown:

    * Prokaryotic cells are simple cells that lack a nucleus and other membrane-bound organelles. They are found in single-celled organisms.

    * Bacteria are a vast and diverse group of single-celled organisms. They are found in virtually every environment on Earth, from the human gut to hot springs and deep-sea vents.

    * Archaea are another group of single-celled organisms. They were originally thought to be bacteria, but they are now recognized as a separate domain of life. Archaea are often found in extreme environments, such as hot springs, salt lakes, and deep-sea vents.

    Eukaryotic cells, which have a nucleus and other membrane-bound organelles, are found in all other organisms, including:

    * Plants

    * Animals

    * Fungi

    * Protists

    So, to summarize: only bacteria and archaea have prokaryotic cells. All other life forms are composed of eukaryotic cells.

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