What is the main difference between prokaryotic and eukaryotic cells?

The main difference between prokaryotic and eukaryotic cells lies in their structural organization, particularly the presence of a nucleus. Prokaryotic cells, which include bacteria and archaea, do not have a membrane-bound nucleus. Instead, their genetic material is located in a region called the nucleoid, which is not enclosed by a membrane. This lack of a defined nucleus is a fundamental characteristic that distinguishes prokaryotic cells from eukaryotic cells.

In contrast, eukaryotic cells, which make up organisms in the kingdoms of animalia, plantae, fungi, and protista, contain a true nucleus where the cell's genetic material is organized and protected by a nuclear membrane. This distinction is significant because it reflects the complexity and organization of the cell's internal structures, allowing for compartmentalization of cellular processes, which is a hallmark of eukaryotic cells.

The other options presented do not accurately describe the differences in structure and organization between prokaryotic and eukaryotic cells. For example, prokaryotic cells generally have simpler structures and do not possess the array of complex organelles that eukaryotic cells do. Additionally, both prokaryotic and eukary