AP BIOLOGY

ANIMAL PHYSIOLOGY

DIGESTION IN HUMANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The food we eat has to be digested because ____
A
the food will taste better
B
large food particles cannot be absorbed by cells
C
the food we eat is too simple
D
large food particles are too big to put in our mouth
Explanation: 

Detailed explanation-1: -The Large Intestine Completes Absorption and Compacts Waste. Chyme passes from the small intestine through the ileocecal valve and into the cecum of the large intestine. Any remaining nutrients and some water are absorbed as peristaltic waves move the chyme into the ascending and transverse colons.

Detailed explanation-2: -Through digestion, large food particles are converted into smaller components that can be readily absorbed into the bloodstream.

Detailed explanation-3: -Why is digestion important? Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair. Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body.

Detailed explanation-4: -The large pieces of food that are ingested have to be broken into smaller particles that can be acted upon by various enzymes. This is mechanical digestion, which begins in the mouth with chewing or mastication and continues with churning and mixing actions in the stomach.

There is 1 question to complete.