pH is the concentration of ions of 

Cellulose is made of several molecules of 

Ruminants are 

Fully digested food is sent to

In the following cell organelle of multicellular organism, intracellular digestion occurs. 

Inactive form of pepsin is

Largest chamber in the digestive system of ruminants is 

Conversion of complex food molecules into simpler ones is called

Killing of bacteria occurs in 

Digestive enzymes are