If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?
(a) Proteins breaking down into amino acids
(b) Starch breaking down into sugars
(c) Fats breaking down into fatty acids and glycerol
(d) Absorption of vitamins
Salivary amylase is an enzyme which breaks down starch present in the food in the mouth. If this is absent, it will affect the breakdown of starch.
Protein breaks down to amino acids by protease.
Fat breaks down in the small intestine by bile.
Hence option (b) is correct.