Question

Chemical digestion of which one of the following starts first in human alimentary canal?

Options

• Proteins

• Starch

• Lipids and fats

• Cellulose

Answer 1

Starch

Explanation:

Salivary amylase, also called ptyalin, is released by the salivary glands and aids in the beginning of chemical digestion in the mouth. Complex starch molecules are broken down by this enzyme into simpler sugars like maltose.