Which of the following is found in eukaryotic cells but not in bacterial cells?

• A. Cytoplasm
• B. Nucleus
• C. Cell membrane
• D. Ribosomes

Answer: (B)

Verified step by step guidance

1. Understand the difference between eukaryotic and prokaryotic cells. Eukaryotic cells have a defined nucleus, while prokaryotic cells, such as bacterial cells, do not.
2. Identify the components listed in the problem: cytoplasm, nucleus, cell membrane, and ribosomes.
3. Recognize that cytoplasm, cell membrane, and ribosomes are found in both eukaryotic and prokaryotic cells.
4. Note that the nucleus is a defining feature of eukaryotic cells, where it houses the cell's genetic material.
5. Conclude that the nucleus is the component found in eukaryotic cells but not in bacterial cells, as bacterial cells lack a true nucleus.