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List two essential roles of ribosome dur...

List two essential roles of ribosome during translation.

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Two essential roles played by ribosomes during translation are
(i) One of the ribosomal RNA (rRNA, 23S in prokaryotes) acts as a peptidyl transferase ribozyme for the formation of peptide bonds.
(ii) The mRNA and charged tRNAs are attached to ribosomal sites. Thus, these provide sites for the attachment during protein synthesis.
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