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BIO NMDCAT Ribonucleic acid (RNA)
nmdcat.online July 3, 2026

75. The site on the large ribosomal subunit where an incoming aminoacyl-tRNA first enters and binds during elongation is the

A. P site
B. A site
✓
C. E site
D. O site

📝 Explanation

The A (aminoacyl) site welcomes the newly arrived, charged tRNA molecule carrying the next amino acid to be added to the growing peptide chain.

📖 Additional Information

  • P site
  • A site
  • E site
  • O site

The A (aminoacyl) site welcomes the newly arrived, charged tRNA molecule carrying the next amino acid to be added to the growing peptide chain.

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