The puffed-up appearance of dough is due to the production of ..........

$LAB$ (Lactic Acid Bacteria) are used to curdle milk by producing:

The bacteria that increase the nutritional quality of milk by increasing vitamin $B_{12}$ are known as .......... .

In which century did the industrial processing of milk begin?

Bacteria cannot be seen with the naked eyes,but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes under a microscope,which sample would you carry and why?

Indian curd is prepared by inoculating milk with: