[Campbell Biology P.405] Based on the 'Amino Acid Activation' section Step 4 , what is the p... | Practice Question

Based on the 'Amino Acid Activation' section Step 4 , what is the primary role of aminoacyl-tRNA synthetase?

  • A: To form the peptide bonds between amino acids during polypeptide synthesis.
  • B: To attach a specific amino acid to its corresponding tRNA molecule, ensuring the accuracy of protein translation.
  • C: To synthesize new tRNA molecules from a DNA template.
  • D: To guide the mRNA out of the nucleus and into the cytoplasm.

Explanation

Aminoacyl-tRNA synthetase is responsible for attaching the correct amino acid to its specific tRNA molecule. This crucial step, known as amino acid activation, ensures that each tRNA carries the appropriate amino acid corresponding to its anticodon, thereby maintaining the fidelity of protein synthesis.