Which type of cell lacks a membrane-bound nucleus?

• A. Plant cell
• B. Prokaryotic cell
• C. Eukaryotic cell
• D. Animal cell

Answer: (B)

Verified step by step guidance

1. Understand the difference between prokaryotic and eukaryotic cells: Prokaryotic cells do not have a membrane-bound nucleus, while eukaryotic cells do.
2. Recall that plant cells and animal cells are types of eukaryotic cells, meaning they have a nucleus enclosed by a membrane.
3. Recognize that prokaryotic cells, such as bacteria, lack a membrane-bound nucleus; their genetic material is free-floating within the cell.
4. Identify that the question asks for the type of cell without a membrane-bound nucleus, which matches the characteristics of prokaryotic cells.
5. Conclude that the correct answer is 'Prokaryotic cell' because it is the only cell type listed that lacks a membrane-bound nucleus.