AP BIOLOGY

ANIMAL PHYSIOLOGY

DIGESTION IN HUMANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Where is the digestion of food completed?
A
liver
B
large intestine
C
stomach
D
small intestine
Explanation: 

Detailed explanation-1: -Digestion and absorption of all biomolecules are completed in the intestine. The small intestine has 3 parts namely-the duodenum (c-shaped), jejunum, and ileum. Complete digestion of food takes place in the ileum.

Detailed explanation-2: -The lowest part of your small intestine is the ileum. This is where the final parts of digestive absorption take place.

Detailed explanation-3: -Digestion involves mixing food with digestive juices, moving it through the digestive tract, and breaking down large molecules of food into smaller molecules. Digestion begins in the mouth, when you chew and swallow, and is completed in the small intestine.

Detailed explanation-4: -Digestion is completed in the ileum region of the small intestine. The last digestive enzymes are released in the small intestine hence digestion is completed here only because no digestion can occur without the help of enzymes catalyzing the reaction.

Detailed explanation-5: -Complete Digestion of Food The intestinal juice secreted by the walls of the small intestine breaks down starch and carbohydrates into simple sugars. These sugars are known as glucose. It also converts the proteins into amino acids. All these simple, broken down forms are called the digested food.

There is 1 question to complete.