During elongation, which ribosomal site receives the tRNA carrying the growing polypeptide chain?

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Multiple Choice

During elongation, which ribosomal site receives the tRNA carrying the growing polypeptide chain?

Explanation:
In elongation, the growing polypeptide chain is transferred to the tRNA that enters the ribosome at the A site. The tRNA in the P site carries the chain initially, and when a new aminoacyl-tRNA binds at the A site, peptide bond formation transfers the growing chain to that A-site tRNA. After translocation, this tRNA moves to the P site and the old tRNA leaves via the E site. So the site that receives the growing chain is the A site.

In elongation, the growing polypeptide chain is transferred to the tRNA that enters the ribosome at the A site. The tRNA in the P site carries the chain initially, and when a new aminoacyl-tRNA binds at the A site, peptide bond formation transfers the growing chain to that A-site tRNA. After translocation, this tRNA moves to the P site and the old tRNA leaves via the E site. So the site that receives the growing chain is the A site.

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