Which type of RNA catalyzes peptide bond formation during protein synthesis?

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Prepare for the PLTW Biomedical Science Test. Study with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready for your exam!

Multiple Choice

Which type of RNA catalyzes peptide bond formation during protein synthesis?

Explanation:
RNA that catalyzes peptide bond formation during protein synthesis is rRNA. The ribosome’s peptidyl transferase center, formed by the large-subunit rRNA, acts as a ribozyme to speed the chemical reaction that links the growing polypeptide on one tRNA to the amino acid on the incoming tRNA. In this process, the RNA—not a protein—drives the formation of peptide bonds. mRNA provides the codon sequence to be read, tRNA brings the correct amino acids, and snRNA is involved in RNA splicing rather than translation.

RNA that catalyzes peptide bond formation during protein synthesis is rRNA. The ribosome’s peptidyl transferase center, formed by the large-subunit rRNA, acts as a ribozyme to speed the chemical reaction that links the growing polypeptide on one tRNA to the amino acid on the incoming tRNA. In this process, the RNA—not a protein—drives the formation of peptide bonds. mRNA provides the codon sequence to be read, tRNA brings the correct amino acids, and snRNA is involved in RNA splicing rather than translation.

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