For how much duration,food is stored in the stomach?

How is the intestinal mucosa protected from the acidic food entering from the stomach?

In mammals,milk is digested by the action of:

Lipase enzyme acts on which of the following substrates?

Digestion of starch starts from the mouth, whereas $A$ is the site of digestion mainly for $B$. Choose the correct combination of options to complete the given statement.

What are the end products of lipid digestion?