Answer:
Step-by-step explanation:
The three domains of life - Bacteria, Archaea, and Eukarya - are defined based on differences in cell structure, genetic makeup, and biochemistry.
Bacteria are single-celled organisms that lack a nucleus and other membrane-bound organelles. They have a simple cell structure, and their genetic material is contained within a single, circular chromosome located in the cytoplasm.
Archaea are also single-celled organisms that lack a nucleus, but their cell structure and biochemistry are distinct from bacteria. For example, their cell walls are made of different materials, and they are able to survive in extreme environments such as hot springs and salt lakes.
Eukarya, on the other hand, are characterized by cells that contain a nucleus and other membrane-bound organelles. This domain includes all organisms with cells that have a complex structure, including plants, animals, fungi, and protists. Eukaryotic cells have a more complex organization and division of labor compared to bacteria and archaea. Additionally, the genetic material of eukaryotes is contained within a nucleus, which is separated from the cytoplasm by a double membrane.
Overall, the differences between the three domains of life reflect the distinct evolutionary paths that these organisms have taken and the adaptations they have made to survive in their environments.