LIFE SCIENCE

Detailed explanation-1: -The overall three-dimensional structure of a polypeptide is called its tertiary structure.

Detailed explanation-2: -Tertiary Structure of Proteins Tertiary structure refers to the overall folding of the entire polypeptide chain into a specific 3D shape. The tertiary structure of enzymes is often a compact, globular shape.

Detailed explanation-3: -The quaternary structure of enzymes is an important aspect in understanding their activity and regulation. Multi-subunit enzymes frequently display cooperative or anti-cooperative properties with respect to substrate binding or allosteric inhibition.

Detailed explanation-4: -In general, quaternary structure refers to 3D interactions between multiple subunits. In the case of nucleic acids, quaternary structure refers to interactions between multiple nucleic acid molecules or between nucleic acids and proteins.

Detailed explanation-5: -Enzymes are mainly globular proteins-protein molecules where the tertiary structure has given the molecule a generally rounded, ball shape (although perhaps a very squashed ball in some cases).