During digestion, what happens in the stomach?

Question

Responses

Water in the food passes into the blood and travels to other organs where it is used.
Water in the food passes into the blood and travels to other organs where it is used.

Some types of food molecules are broken down into smaller molecules by chemical reactions.
Some types of food molecules are broken down into smaller molecules by chemical reactions.

Food passes into the blood and travels to other organs where it is used in various reactions.
Food passes into the blood and travels to other organs where it is used in various reactions.

All food molecules are broken down into smaller molecules by chemical reactions.

Answer 1

During digestion in the stomach, the most accurate response is:

Some types of food molecules are broken down into smaller molecules by chemical reactions.

The stomach primarily functions to break down food through mechanical and chemical means. It secretes gastric juices, which contain hydrochloric acid and digestive enzymes like pepsin, that help to break down proteins into smaller polypeptides. While some nutrients such as water and certain small molecules can be absorbed in the stomach, the primary role is the initial digestion of food rather than complete absorption or digestion of all food molecules.