Question

What is unusual about the peptide bond compared to the other covalent bonds that form the polypeptide backbone?

A) The side chains only face internally, excluding them from interacting with water.

B) The single bonds on either side of the peptide bond cannot rotate, making the peptide backbone very rigid.

C) There is an amino group on one end of the backbone and an aldehyde group on the other.

D) Peptide bonds behave like double bonds in terms of stability and lack of movement of atoms around the bond.

Answer 1

Answer:

D

Explanation:

A peptide bond is also known as amide bond which is formed between two amino acid molecules. An amino acid contains two functional groups; a carboxylic acid group and an amino group. ... The resulting linkage between two amino acid molecules is called a covalent bond.

Answer 2

The unusual about peptide bond  is ( D );  Peptide bonds behave like double bonds in terms of stability and lack of movement of atoms around the bond

The polypeptide is the Non-R group of amino acids polymers that consists of

N-C-C-N-C-C-N , and the polypeptide backbone allows for the backbone to backbone hydrogen bonding and it acts as a contributor to the secondary structure of the protein.  

also the linkage between amino acid molecules is called a covalent bond.

Hence the unusual about the peptide bond when compared to other covalent bonds that form the polypeptide backbone is  Peptide bonds behave like double bonds in terms of stability and lack of movement of atoms around the bond

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