(N/A) Biotechnology deals with techniques of using live organisms or enzymes from organisms to produce products and processes useful to humans.
In this sense, making curd, bread, or wine, which are all microbe-mediated processes, could also be thought of as a form of biotechnology.
Modern biotechnology is often associated with the production of therapeutic substances like insulin, using gene-transformed microorganisms such as $E. coli$ or yeast. It also includes the development of genetically modified organisms (GMOs) like $Bt$-Cotton.
Biotechnology is also associated with the medical treatment of diseases like Hepatitis-$C$, Diabetes, Cancer, Hemophilia, and Osteoporosis.
The European Federation of Biotechnology $(EFB)$ has provided a definition that encompasses both traditional views and modern molecular biotechnology.
The definition given by $EFB$ is as follows: "The integration of natural science and organisms, cells, parts thereof, and molecular analogues for products and services."