LIFE SCIENCE

Detailed explanation-1: -A peptide is a short string of 2 to 50 amino acids, formed by a condensation reaction, joining together through a covalent bond. [1] Sequential covalent bonds with additional amino acids yield a peptide chain and the building block of proteins.

Detailed explanation-2: -Peptide molecules are composed of two or more amino acids joined through amide formation involving the carboxyl group of each amino acid and the amino group of the next. The chemical bond between the carbon and nitrogen atoms of each amide group is called a peptide bond.

Detailed explanation-3: -A chain consisting of only two amino acid units is called a dipeptide; a chain consisting of three is a tripeptide.

Detailed explanation-4: -Two molecules linked by a peptide bond become what is called a dipeptide. A chain of molecules linked by peptide bonds is called a polypeptide. A protein is made up of one or more polypeptide chains, each of which consists of amino acids which have been mentioned earlier.

Detailed explanation-5: -Traditionally, peptides are defined as molecules that consist of between 2 and 50 amino acids, whereas proteins are made up of 50 or more amino acids.