Which of the following answers correctly explains the role of ribosomes during protein synthesis?

• A. Ribosomes serve as a template to copy the DNA sequence.
• B. Ribosomes are the monomers that form proteins when joined together.
• C. Ribosomes "read" the DNA and copy it during transcription.
• D. Ribosomes help "link" the amino acids together by facilitating the formation of peptide bonds with each other.

Answer: (D)

Verified step by step guidance

1. Understand the role of ribosomes in protein synthesis: Ribosomes are cellular structures that facilitate the assembly of amino acids into proteins by catalyzing the formation of peptide bonds.
2. Clarify the process of protein synthesis: Protein synthesis occurs in two main stages—transcription and translation. Ribosomes are involved in the translation stage, not transcription.
3. Recognize that ribosomes do not copy DNA: DNA is transcribed into mRNA in the nucleus, and ribosomes do not play a role in this process. Instead, ribosomes use the mRNA as a template during translation.
4. Identify the correct function of ribosomes: Ribosomes 'read' the mRNA sequence and facilitate the linking of amino acids in the correct order to form a polypeptide chain, using peptide bonds.
5. Conclude that the correct answer is: Ribosomes help 'link' the amino acids together by facilitating the formation of peptide bonds with each other, as this accurately describes their role in protein synthesis.