Question

25 - 26 biology a / module 2. principles of inheritance

1. how are peptide bonds formed between amino acids in the elongation process of the

the carboxyl group of one amino acid reacts with amino group of the same amino acid.
the amine group of one amino acid reacts with carboxyl group of another amino acid.
the amine group of one amino acid reacts with amine group of another amino acid.
the carboxyl group of one amino acid reacts with carboxyl group of another amino acid.

Explanation:

In the elongation process of protein - synthesis, peptide bonds are formed when the amine group ($-NH_2$) of one amino acid reacts with the carboxyl group ($-COOH$) of another amino acid, with the release of a water molecule.

Answer:

The amine group of one amino acid reacts with carboxyl group of another amino acid.