Question

The site where the digestion of starch begins is

• A. 1
• B. 2
• C. 3
• D. 4
• E. 5

Answer 1

Answer: (A)

1

In the diagram, label number $1$ shows oral cavity. The digestion of starch is initiaited in the oral cavity where carbohydrates are partially digested into shorter chains of glucose called polysaccharides, as well as a disaccharide consisting of two glucose molecules called maltose by amylase. Amylase is present in the salive secreted by salivary glands in the oral cavity.

So, option A is the correct answer.