Microorganisms are important because they play a key role in many processes that involve human life and health. Microorganisms are present in nature as well as in synthetically produced products designed to improve life.
Microorganisms have several applications in the food industry. Yeast, one common microorganism, is important in the production of foods like bread. Other microorganisms, such as bacteria, are used to produce foods such as yogurt. People in need of insulin can receive a synthetic form that is manufactured using yeast or bacteria. Microorganisms occur naturally in the human body and assist with many of its functions. E. coli is present in the gut and aids in digestion. Other gut bacterium assist in synthesizing vitamins.