For lunch you eat a turkey and cheese sandwich on 100% whole wheat bread, a bana

Question

For lunch you eat a turkey and cheese sandwich on 100% whole wheat bread, a banana, a bottle of chocolate milk (contains added sugar), and carrot sticks with hummus. Given this information:

Name which foods contain each of the monosaccharides, disaccharides, and polysaccharides. If the food contains a disaccharide or polysaccharide, also include its name in the list for the respective monosaccharide.

Describe the process of digestion & absorption for the sources of carbohydrate in the diet.

What happens to these sources of carbohydrate in post-absorption?

Explanation / Answer

Monosaccharides are foods which contain either glucose,fructose or galactose. Disaccharides are combination of two monosaccharides whereas polysaccharides composed of more than 10 monosaccharides.

The foods containing monosaccharides are all the foods that are given because every food is comprised of glucose.

Disaccharides are turkey,banana and cheese sandwich.

Polysaccharides are whole wheat bread, cheese sandwich and bottle of chocolate milk.

Process of digestion:

The disaccharides and polysaccharides are first broken down to monosaccharides where firstly the starch is hydrolysed in mouth by salivary amylase. Then transported to small intestine where starch is further hydrolysed by pancreatic amylase to dextrin and maltose. Glucosidases breaks down these molecules and forms glucose or fructose or galactose. These are then transported through wall of small intestine by ion channels and absorbed by the epithelium and transported to blood or through portal vein they are transported to the liver. After absorption and digestion of the carbohydrates they are stored as fat in the body. Where they can be used when levels of glucose is low in the body.

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.