객관식
In eukaryotic cells, the primary site of ribosomal RNA (rRNA) synthesis is the:
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11. Translation
Ribosomal Structure
객관식
Which of the following ribosomal sites is responsible for adding the amino acid to a growing polypeptide chain?
A
A site
B
C site
C
P site
D
E site
검증된 단계별 안내1
Understand the role of ribosomal sites: The ribosome has three key sites known as the A (aminoacyl), P (peptidyl), and E (exit) sites, each playing a distinct role in protein synthesis.
Identify the function of the A site: The A site is where the incoming aminoacyl-tRNA, which carries a new amino acid, binds to the ribosome.
Identify the function of the P site: The P site holds the tRNA carrying the growing polypeptide chain. This is where the peptide bond forms, adding the new amino acid to the chain.
Identify the function of the E site: The E site is where the tRNA, now without an amino acid, exits the ribosome after its amino acid has been added to the polypeptide chain.
Conclude that the P site is responsible for adding the amino acid to the growing polypeptide chain, as it is where the peptide bond formation occurs, linking the new amino acid to the chain.
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