In which of the following processes is biotechnology not applied?

Biotechnology is not applied in the Electroplating of metals process. Biotechnology is the use of living organisms or biological processes for industrial, medical, or environmental applications. In the manufacture of drugs, biotechnology is used to produce medications such as insulin, vaccines, and antibodies. In the treatment of domestic sewage, biotechnology is used to break down organic matter in wastewater using microorganisms. In the production of alcoholic beverages, biotechnology is used to ferment sugars into alcohol using yeast. However, in electroplating, a process used to coat one metal with another by passing an electric current through a solution containing ions of the coating metal and the metal to be coated, biotechnology is not involved. This process involves chemical and electrical reactions, but not biological ones.