Chapter 18.5, Problem 51PP

(a)

Interpretation Introduction

Interpretation : The type of protein that describes the given statement “In the amino acid, the interaction of R groups results in formation of disulphide bonds or ionic bonds” needs to the determined.

Concept Introduction : Proteins are polymeric biomolecules which are formed by the polymerisation of amino acids. Amino acids are the organic molecules with $–{\text{NH}}_{\text{2}}$ and −COOH functional groups bonded on same carbon atom of the molecule.

They polymerise by peptide linkage to form dipeptide, oligopeptide and polypeptide molecules. Each peptide bond formation is a condensation reaction that occurs with the elimination of water molecule.

(b)

Interpretation Introduction

Interpretation : The type of protein that describes the given statement “In the polypeptide chains the amino acids are joined by peptide bonds”needs to the determined.

Concept Introduction : Proteins are polymeric biomolecules which are formed by the polymerisation of amino acids. Amino acids are the organic molecules with $–{\text{NH}}_{\text{2}}$ and −COOH functional groups bonded on same carbon atom of the molecule.

They polymerise by peptide linkage to form dipeptide, oligopeptide and polypeptide molecules. Each peptide bond formation is a condensation reaction that occurs with the elimination of water molecule.

(c)

Interpretation Introduction

Interpretation : The type of protein that describes the given statement “In the beta-pleated sheet the polypeptides have hydrogen bonding interactions with the polypeptides in adjacent chains” needs to the determined.

Concept Introduction : Proteins are polymeric biomolecules which are formed by the polymerisation of amino acids. Amino acids are the organic molecules with $–{\text{NH}}_{\text{2}}$ and −COOH functional groups bonded on same carbon atom of the molecule.

They polymerise by peptide linkage to form dipeptide, oligopeptide and polypeptide molecules. Each peptide bond formation is a condensation reaction that occurs with the elimination of water molecule.