Final answer:
Cells are classified based on whether they have a membrane-bound nucleus into prokaryotic and eukaryotic cells in Biology.
Step-by-step explanation:
The subject of this question is Biology. The student is asking about the classification of cells based on whether they contain membrane-bound nuclei.
Based on whether they have a nucleus, there are two basic types of cells: prokaryotic cells and eukaryotic cells. Prokaryotic cells do not have a membrane-bound nucleus, while eukaryotic cells do have a membrane-bound nucleus.
For example, animal cells, plant cells, fungal cells, and protist cells are classified as eukaryotic cells, while bacterial cells are classified as prokaryotic cells.