Your favorite sandwich is a BLT, bacon, lettuce, tomato and mayonnaise on bread. Describe various parts of this sandwich are digested as they move through your digestive tract.
a. Bacon
b. Lettuce
c. Tomato
d. Mayonnaise
e. Bread

Respuesta :

Digestion - Bacon
Bacon is mostly fat and protein. Proteins are digested in the stomach with the help of an enzyme called pepsin and fats are digested by bile produced by the liver and lipase produced by the pancreas in the small intestine. The small intestine absorbs the nutrients and the large intestine absorbs the water.
3: Digestion - Lettuce + Tomato
Lettuce is mostly cellulose (fiber), which cannot be digested by the body due to the lack of a functional appendix in digestion. Absorption of small vitamins and water, though, occur in the large intestine. Tomato also contains cellulose, but also has some potassium and protein. Protein, again, is digested in the stomach and potassium is absorbed in the large intestine as well as the water.
4: Digestion - Bread
Bread is mostly simple carbohydrates if it's white bread (or complex carbohydrates if whole grain). The digestion of the carbs in bread starts in the mouth with salivary amylase and is continued in the small intestine with pancreatic amylase. Again, nutrients are absorbed in the small intestine.