Answer
Humans have been using microorganisms and their products for hundred of years. Some of the uses are as follows:
1. Yeast is used for baking purposes and in manufacture of alcohol and wines.
2. Enzymes are used nowadays for various medical purposes.
3. Milk is converted to yogurt by fermentation.
4. Genetic engineering is also being used in medical field nowadays.
Work Step by Step
See answer above.
