The Three Domains of Life

How are all living things on Earth primarily divided into large domains?

• Based on their size and weight

• Based on their color and appearance

• Based on their fundamental characteristics

• Based on their geographical location

What are the three main domains into which all organisms on Earth are classified?

• Plants, Animals, and Fungi

• Prokaryotes, Eukaryotes, and Viruses

• Bacteria, Archaea, and Eukarya

• Unicellular, Multicellular, and Acellular

Which of the following is a shared characteristic of both Bacteria and Archaea?

• They are multicellular organisms

• Their cells contain a nucleus

• They are prokaryotic, lacking a nucleus and membrane-bound organelles

• They primarily reproduce sexually

What is a key difference in the cell wall composition between Bacteria and Archaea?

• Bacteria cell walls contain isoprene chains, while Archaea cell walls contain fatty acid chains

• Archaea cell walls contain peptidoglycan, while Bacteria cell walls do not

• Bacteria cell walls contain peptidoglycan, while Archaea cell walls do not

• Both Bacteria and Archaea cell walls contain cellulose

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