The cells having well - organized nucleus with a nuclear membrane are designated as ______________.

Eukaryotic cells

The correct answer is Option (3)- Eukaryotic cells

The cells having a well-organized nucleus with a nuclear membrane are designated as Eukaryotic cells.

Explanation:

Eukaryotic cells are characterized by having a true nucleus enclosed in a nuclear membrane. The nucleus contains genetic material (DNA) organized into chromosomes. In addition to the nucleus, eukaryotic cells typically have other membrane-bound organelles, such as mitochondria, endoplasmic reticulum, and Golgi apparatus. Cheek cells are examples of eukaryotic cells, as they possess these membrane-bound organelles and a well-defined nucleus.

In contrast, prokaryotic cells, such as those of bacteria, lack a true nucleus and membrane-bound organelles.Example bacteria . Autokaryotic cells is not a commonly used term in cell biology.