Any chemical reaction involving biomolecules is called a biochemical process.
For example:- all the processes occurring in body of organisms are biochemical processes. It is the study which deals with many complex and interrelated chemical changes. Examples include:
Protein synthesis: The chemical reactions by which proteins and all their precursors are synthesized is a phenomenon named as Protein synthesis. Protein biosynthesis is the process in which cells build or manufacture proteins.
Lipid biosynthesis: Lipids are small organic molecules made of mostly carbon and hydrogen atoms. They have many forms, and the human body uses them for a variety of essential functions. Testosterone, vitamins A, D, E and K, cholesterol and fat are all considered lipids, and they all serve a specific function in the body. Formation of lipids involves number of biochemical processes.
Metabolism:Metabolism is the set of life–sustaining chemical transformations within the cells of living organisms. These enzyme–catalyzed reactions allow organisms to grow and reproduce, maintain their structures, and respond to their environments. The word metabolism can also refer to all chemical reactions that occur in living organisms, including digestion and the transport of substances into and between different cells, in which case the set of reactions within the cells is called intermediary metabolism or intermediate metabolism.
Chemical basis of heredity: DNA is the chemical signature of traits that we have inherited from each parent. DNA is the information source for making protein. A section of DNA that provides information for one protein is called gene for that protein. Protein controls the characteristics. Each step involves lot many biochemical processes.