When air is blown from the mouth into a test tube containing lime water,the lime water turns milky due to the presence of:

Name the organisms which utilize complex substances and break them down to simpler forms.

Name the glands associated with the digestion of starch in the human digestive tract and mention their role. How is the required $pH$ maintained in the stomach and small intestine?

After a vigorous exercise,you may experience cramps in your leg muscles. Why does this happen?

What are the final products produced after the digestion of carbohydrates, proteins, and fats?

Bile is an alkaline fluid produced by the liver and stored in the gall bladder.