What are the three domains of the modern classification system?

The three domains of the modern classification system are Archaea, Bacteria, and Eukarya. Archaea consists of prokaryotic organisms with distinct molecular characteristics, such as unique membrane lipids and rRNA sequences. Bacteria includes prokaryotic organisms with peptidoglycan in their cell walls and distinct rRNA sequences. Eukarya encompasses all eukaryotic organisms, which have cells with nuclei and membrane-bound organelles. This classification system reflects the evolutionary relationships among these groups based on molecular data.