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Both the esophagus and the small intestine are involved in the digestion of food. The esophagus squeezes food into the stomach by wave-like muscle contractions. Peptidase enzymes in the small intestine break food molecules into smaller molecules.

Which statement best describes changes to food during digestion?
A) The muscle contractions result in physical changes, while the action of the peptidase results in chemical changes.
B) The muscle contractions and the action of the peptidase both result only in physical changes.
C) The muscle contractions result in chemical changes, while the action of the peptidase results in physical changes.
D) The muscle contractions and the action of the peptidase both result only in chemical changes.

Respuesta :

Answer:

The muscle contractions result in physical changes, while the action of the peptidase results in chemical changes.

Explanation:

just did the test.

Nyctalus

Answer:

Option A. The muscle contraction results in physical changes, while the action of the peptidase results in a chemical change.

Explanation:

  • Contraction of Esophagus walls: The simultaneous contraction of the walls of the esophagus is called peristalsis which is done in order to move the food from the mouth to the stomach. The movement of the bolus through the esophagus is a mechanical process as no changes in the chemical composition of the food is altered. Therefore, it can be said that it is a physical process.
  • Breaking of food by peptidase: Peptidase is an enzyme present in the small intestine responsible for breaking down peptides into amino acids. Since the process of breaking down peptides into amino acids results in altering the chemical composition of the food which cannot be reversed, therefore, this process is a chemical process.

For more information:

https://brainly.com/question/16941840

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