The salivary amylase shows maximum digestive action at pH . . . . . . .

Select the correct statements regarding the stomach and gastric juice.
$I-$ The stomach stores food for $4$ to $5$ hours.
$II-$ The food mixes with acidic gastric juice to form chyme.
$III-$ The $pH$ of gastric juice is $1.8$.
$IV-$ Gastric glands secrete small amounts of lipases.

Digestion is the breaking down of large food molecules into smaller ones. The main purpose of this is to

Bile helps in the digestion of fat through:

Meals which are rich in fat are not digested in the intestine in the absence of

Secretion of salivary gland performs following functions $EXCEPT$ . . . . . . .