Wayground | Three Life Domains

How are all living things on Earth primarily classified?

• By their size and color

• Into three large domains

• Based on their diet

• By their habitat

What is a common characteristic of both Bacteria and Archaea?

• They are multicellular.

• Their cells have a nucleus.

• They are unicellular.

• Their cell walls contain peptidoglycan.

What is a key difference between the cell walls of 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.

• Archaea have cell walls, but Bacteria do not.

Which statement is true about Archaea?

• They commonly cause diseases in humans.

• They can only survive in moderate environments.

• They are known for living in extremely harsh environments.

• Their genetic code is read by the same enzymes as bacteria.

Which of the following is a characteristic of organisms in the Eukarya domain?

• They are always single-celled.

• Their cells lack a nucleus and membrane-bound organelles.

• They include kingdoms like Protists, Fungi, Plants, and Animals.

• Their plasma membranes are made of fatty acid chains only.