3. In which food would you find lactic acid bacteria? Mention some of their useful applications.
Lactic acid bacteria (LAB) is found in curd. The useful applications of LAB are as follows:
1. These bacteria can convert milk into curd.
2. LAB are also found in our stomach to check the growth of harmful bacteria in our stomach.
3. LAB increases the amount of vitamin B12 in curd. Thus, it makes curd nutritious.