Structural Biochemistry:
A subfield of biology, biochemistry, and biophysics is structural biochemistry. The study of the three-dimensional structures of physiologically significant molecules and macromolecules, such as proteins, nucleic acids, and carbohydrates, is known as structural biology. These molecules' 3D structures in general define their functions. Even with the most sophisticated light microscopes, biomolecules are too tiny to be observed closely.