Question

what are probiotics? how do bacteria play a role in making pro biotic?

Answer 1

Probiotics are microorganisms that are claimed to provide health benefits when consumed. The term came into more common use after 1980. Bifidobacteria are used as a probioticto improve intestinal flora balance, inhibit harmful bacteria, promote good digestion, boost immune function, and increase resistance to infection. Your intestinal organisms form an integral part of who you are (there are 10 times as many of their cells as there are of yours)

Answer 2

probiotics are live bacteria and yeasts that are good for you, especially your digestive system. 
The host immune system plays a vitalrole in preventing infection by bacteriapassing through the gut. Probiotic bacteria can stimulate the immune system and enhance the suppression of gut pathogens.