Question

study the condition necessary for the growth of curd bacteria and write the experience in the form of paragraph

Answer 1

warm milk turns acidic when curd is added. milk contains a sugar called lactose. lactobacillus bacteria present in the curd help in converting the lactose sugar present in the milk to lactic acid by the process of fermentation.this creates the acidic medium needed for casein protein present in the milk to coagulate to form the curd.

Answer 2

ANSWER:

Lactobacillus is the bacteria whose growth is necessary for turning out milk into curd.  This conversion takes place when the temperature is around 30 to 40 degree centigrade.  

EXPLANATION:  

Milk contains lactose in it. Lactobacillus bulgaricus and Lactobacillus delbrueckii are the bacteria that belongs to the same genus lactobacillus. These bacteria uses the enzyme from lactose to produce energy (ATP) that converts the lactose into lactic acid. This makes milk turn into curd.