Which of the following structures is found in prokaryotic cells?

• A. Chloroplasts
• B. Nucleus
• C. Mitochondria
• D. Ribosomes

Answer: (D)

Verified step by step guidance

1. Understand the basic structure of prokaryotic cells: Prokaryotic cells are simpler than eukaryotic cells and do not have membrane-bound organelles.
2. Identify the structures listed in the problem: Chloroplasts, Nucleus, Mitochondria, and Ribosomes.
3. Recall that chloroplasts, the nucleus, and mitochondria are membrane-bound organelles, which are typically found in eukaryotic cells.
4. Recognize that ribosomes are not membrane-bound and are present in both prokaryotic and eukaryotic cells.
5. Conclude that ribosomes are the structure found in prokaryotic cells from the given options.