What is the difference between the nuclei of prokaryotic and eukaryotic cells?

Explanation

**Step-by-Step Solution:**

1. **Definition of Prokaryotic and Eukaryotic Cells:**
- Prokaryotic cells are simpler, unicellular organisms that lack a defined nucleus and membrane-bound organelles. Examples include bacteria and archaea.
- Eukaryotic cells are more complex, can be unicellular or multicellular, and have a well-defined nucleus and membrane-bound organelles. Examples include plant and animal cells.

2. **Nucleus Structure in Prokaryotic Cells:**
- In prokaryotic cells, the nucleus is not well-defined. Instead of a true nucleus, they have a region called the nucleoid where the genetic material (DNA) is located.
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