Which of the following statements about digestion is/are TRUE? (Select all that apply.)
Salivary glands are located in the esophagus.
Digestion begins in the mouth.
Saliva changes the starches in food into simple sugars.
Saliva is an enzyme.

Answer:

option 1, 2, and 4

Explanation:

i took the test lol

The true statements are digestion begins in the mouth, saliva changes the starches in food into simple sugars, and saliva is an enzyme. The true options are (2), (3), and (4).

The process of breaking down food mechanically and chemically begins digestion in the mouth. When we consume, our teeth break down the food with chewing motions. By increasing the food's surface area through mechanical means, enzyme function is facilitated.

The digestion of carbohydrates, and starches, depends on the salivary enzyme amylase. When amylase disassembles the lengthy chains of starch molecules into smaller units, it creates maltose, a disaccharide (a form of sugar).

A biological enzyme is a molecular catalyst that speeds up particular chemical reactions without being consumed or changed in the process. Amylase, which was previously noted, is one of the most significant enzymes found in saliva. In the mouth, amylase aids in the first digestion of carbohydrates.

Hence, the true statements are digestion begins in the mouth, saliva changes the starches in food into simple sugars, and saliva is an enzyme. The true options are (2), (3), and (4).

To learn more about Saliva, here:
https://brainly.com/question/30020751

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All the functional parts of the _______________ system are called the alimentary canal.

Excretory
Digestive
Circulatory
Respiratory

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