Question

One night Sanjiv's mother put some curd in 2 kg of milk and in next morning he saw the whole milk is converted into curd. This happens due to what? ​

Answer 1

Milk is converted into curd or yogurt by the process of fermentation. Milk consists of globular proteins called casein. Here curd forms because of the chemical reaction between the lactic acid bacteria and casein. During fermentation, the bacteria use enzymes to produce energy (ATP) from lactose.

hope it helps !!