HORTICULTURE

Detailed explanation-1: -Biochemistry – the study of the structure and function of cellular components, such as proteins, carbohydrates, lipids, nucleic acids, and other biomolecules, and of their functions and transformations during life processes.

Detailed explanation-2: -Structural Biology is the branch of biochemistry, biophysics, and microbiology that allows individuals to study the molecular structure of biological macromolecules.

Detailed explanation-3: -Molecular biology is the branch of biology that studies the molecular basis of biological activity. Living things are made of chemicals just as non-living things are, so a molecular biologist studies how molecules interact with one another in living organisms to perform the functions of life.

Detailed explanation-4: -So the correct option is ‘Cellular biology’.