NCERT · Class 12 · Chemistry · BiomoleculesState any two differences between globular proteins and fibrous proteins.

Fibrous proteins consist of polypeptide chains running parallel and held together by hydrogen and disulfide bonds, forming fiber-like structures; they are insoluble in water (e.g., keratin, myosin). In contrast, globular proteins feature polypeptide chains folded into spherical shapes due to internal interactions; they are soluble in water (e.g., insulin, albumin). Fibrous proteins provide structural support, whereas globular proteins serve catalytic and metabolic functions.