Question

In ribosome, a peptide bond is formed by nucleophilic attack of the main chain ____ group of the next amino acid to the main chain ____ group of the previous amino acid in amino acid sequence.

Select one:

a. carboxyl, amino

b. amino, carboxyl

c. carboxyl, carboxyl

d. amino, amino

Answer 1

option b- amino and carboxyl

A peptide bond is formed between the amino group of the A site amino acid and the carboxyl group of the most-recently attached amino acid in the growing polypeptide chain attached to the P-site tRNA. A ribosome is a complex protein made of two subunits. It houses the mRNA and tRNA strands as they work through the process of translation. ... tRNA molecules carry in the amino acids. The peptide bonds that link amino acids are formed by the release of water molecules.