Microbes are microscopic organisms that can be single-celled or multicellular. The study of microorganisms is called microbiology. Microbes play many useful roles in our daily lives and industry. They are used in food production like curd, dosa, and cheeses. They also have important functions in our bodies and help prevent disease. Microbes are widely used in industry for fermentation and production of various chemicals, enzymes, antibiotics, and other pharmaceutical products.