This video lecture from Carboxylic Acids (F.Sc. second year Chemistry) covers peptides and proteins. Peptides are compounds formed by condensation of two or more same or different alpha-amino acids. -HN-CO- linkage is called peptide linkage. A very large peptide molecule having molecular mass more than 10000 is called a protein. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.