How do proteins aid in digestion?

A. They protect stomach cells from the acidity required in the digestive process.
B. They affect muscle contractions to activate the digestive process.
C. They perform anabolic functions to break down molecules.
D. They act as catalysts by reducing the energy required for activation.

Proteins are crucial for aiding in digestion by being broken down into essential amino acids, with enzymes like pepsin and hydrochloric acid playing key roles in the process.

Explanation:

Proteins aid in digestion by being broken down in the stomach to smaller polypeptides via hydrochloric acid and protease actions, ultimately leading to the absorption of essential amino acids. They are crucial for providing the body with the necessary building blocks for various cellular functions.

Pepsin, an enzyme secreted in the stomach, plays a key role in breaking down proteins into smaller polypeptides, which are further processed in the small intestine. This digestive process is essential for extracting nutrients from food and sustaining bodily functions.

Hydrochloric acid in the stomach helps in proteolysis, breaking down proteins into amino acids that are essential for growth, repair, and overall maintenance of the body.

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