This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
True about ribosomes 
Select and explain. 
A. Conserved in nature, B. Role is to bring t-RNA and m-RNA together, C. DNA forms RNA and protein are formed from RNA, D. They are always free
A: Conserved in nature
Answer: A: Conserved in nature 
Explanation: Ribosomes are the protein builders or the protein synthesizers of the cell. They are like construction guys who connect one amino acid at a time and build long chains. Ribosomes are special because they are found in both prokaryotes and eukaryotes