Which of the following is a similarity between bacterial cells and human cells?

• A. Both have cell walls made of cellulose.
• B. Both possess mitochondria for energy production.
• C. Both contain ribosomes for protein synthesis.
• D. Both have a nucleus surrounded by a nuclear envelope.

Answer: (C)

Verified step by step guidance

1. Identify the key cellular components mentioned in the options and understand their presence or absence in bacterial and human cells.
2. Recall that bacterial cells are prokaryotic, meaning they lack membrane-bound organelles such as mitochondria and a nucleus, while human cells are eukaryotic and contain these structures.
3. Understand that bacterial cell walls are typically made of peptidoglycan, not cellulose, which is found in plant cell walls, so the first option is incorrect.
4. Recognize that both bacterial and human cells contain ribosomes, which are essential for protein synthesis, although their ribosomes differ slightly in size and structure.
5. Conclude that the similarity between bacterial and human cells is the presence of ribosomes for protein synthesis, as this is a fundamental and shared cellular feature.