Modern classification, otherwise known as taxonomy, was invented so as to have a single system used throughout the entire world in understanding different types of beings in existence. This way you avoid having different names for same things.
Answer:
<em><u>Eukaryotic cells</u></em> contain membrane-bound organelles, such as the nucleus, while <em><u>prokaryotic cells</u></em> do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.