What term describes organisms whose cells lack a nucleus?

What term describes organisms whose cells lack a nucleus?

• A. Eukaryote
• B. Genus
• C. Solution
• D. Prokaryote

Answer: (D)

Cells without a nucleus are prokaryotes. In prokaryotic cells, the genetic material isn’t enclosed by a membrane-bound nucleus; instead it sits in the cytoplasm in a region called the nucleoid. Prokaryotes also typically lack the membrane-bound organelles found in more complex cells. This fundamental feature—the absence of a nucleus—defines prokaryotes, such as bacteria and archaea. A eukaryote, by contrast, has a nucleus. Genus is just a level of biological classification, not a cell type, and a solution is simply a mixture, not a description of cell structure.

Cells without a nucleus are prokaryotes. In prokaryotic cells, the genetic material isn’t enclosed by a membrane-bound nucleus; instead it sits in the cytoplasm in a region called the nucleoid. Prokaryotes also typically lack the membrane-bound organelles found in more complex cells. This fundamental feature—the absence of a nucleus—defines prokaryotes, such as bacteria and archaea. A eukaryote, by contrast, has a nucleus. Genus is just a level of biological classification, not a cell type, and a solution is simply a mixture, not a description of cell structure.