Question

Question 193.5 pts Sarah consumes a peanut butter and jelly

sandwich and a glass of milk for lunch, and we will follow the
digestion of the carbohydrates in the meal. Digestion begins in the
mouth whe

Answer 1

Carbohydrates begin digestion in the mouth with amylase in saliva, proteins start in the stomach, and fats are primarily digested in the small intestine with bile and lipases.

Step-by-step explanation:

Among the three major food classes - carbohydrates, fats, and proteins - each begin digestion in different parts of the digestive system. Carbohydrates start to be digested in the mouth by the enzyme amylase present in saliva, which breaks down food starches into the disaccharide maltose. Proteins begin their digestion in the stomach with the help of enzymes like pepsin. Lastly, fats are primarily digested in the small intestine with the aid of bile salts and lipases. During carbohydrate digestion, the process continues in the small intestine, where enzymes such as maltase break down di- and polysaccharides to monosaccharides which are then absorbed into the bloodstream.