Q. Consider the following regarding ribosomes:

1. They contain DNA
2. They contain RNA
3. They contain protein

Which of the above statements is / are correct?
Answer: Only 2 and 3
Notes: Ribosomes do not contain DNA; rather, they are composed mainly of ribosomal RNA (rRNA) and proteins. DNA is present in cell nucleus, mitochondria, and chloroplasts. The function of ribosomes is protein synthesis, and this process requires both RNA and proteins for structural and catalytic roles.