Explanation:

Biotechnology is the use of an organism, or a component of an organism or other biological system, to make a product or process for a specific use.
It can include both cutting-edge laboratory techniques and traditional agricultural and culinary techniques that have been practiced for hundreds of years.
Beer brewing: In beer brewing, tiny fungi (yeasts) are introduced into a solution of malted barley sugar, which they busily metabolize through a process called fermentation. The by-product of the fermentation is the alcohol that’s found in beer. Here, we see an organism – the yeast – being used to make a product for human consumption.
Penicillin: The antibiotic penicillin is generated by certain molds. To make small amounts of penicillin for use in early clinical trials, researchers had to grow up to 500 liters of “mold juice” a week. Here, an organism (mold) was used to make a product for human use – in this case, an antibiotic to treat bacterial infections.
Gene therapy: Gene therapy is an emerging technique used to treat genetic disorders that are caused by a nonfunctional gene. It works by delivering the “missing” gene’s DNA to the cells of the body.
In gene therapy, biological components from different sources (a gene from humans, a plasmid originally from bacteria) are combined to make a new product.
Biotechnology has additional applications in areas such as food production and the remediation (cleanup) of environmental pollution.