The site on the ribsosome where the new amino acid is added to the growing polypeptide chain.Group of answer choicesmRNA binding siteamino acid attachment siteanticodoncodonA siteP siteE site
Question
The site on the ribsosome where the new amino acid is added to the growing polypeptide chain.Group of answer choicesmRNA binding siteamino acid attachment siteanticodoncodonA siteP siteE site
Solution
The site on the ribosome where the new amino acid is added to the growing polypeptide chain is the A site, also known as the Aminoacyl-tRNA site. Here's a step-by-step explanation:
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The ribosome consists of two subunits, each of which contains rRNA and protein. The smaller subunit is where the mRNA binds, and the larger subunit is where the amino acids get added to the growing polypeptide chain.
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The larger subunit of the ribosome has three sites: the A (Aminoacyl), P (Peptidyl), and E (Exit) sites.
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The A site is the first location the tRNA binds during the protein synthesis process. It's here that the anticodon of the incoming tRNA molecule, carrying an amino acid, pairs with the mRNA codon.
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The P site is where the tRNA adds its amino acid to the growing chain.
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After the amino acid has been added, the tRNA moves into the E site before exiting the ribosome.
So, the new amino acid is added to the growing polypeptide chain at the A site.
Similar Questions
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