a.Food has to be digested before it can be used by the cells
b. Food is taken to all cells of the body by the blood.
c. Digestion of food takes place in the large intestine
d. All digestive juices are made in the mouth, the stomach and
the small intestine.
e.Good food should have very little waste material.
f. Doing exercises just after eating is good for digestion.
Answers
Answer:
(a) Food is our fuel, and its nutrients give our bodies' cells the energy and substances they need to work. But before food can do that, it must be digested into small pieces the body can absorb and use.
(b) Cells, like humans, cannot generate energy without locating a source in their environment. However, whereas humans search for substances like fossil fuels to power their homes and businesses, cells seek their energy in the form of food molecules or sunlight.
(C) The purpose of the large intestine is to absorb water and salts from the material that has not been digested as food, and get rid of any waste products left over. By the time food mixed with digestive juices reaches your large intestine, most digestion and absorption has already taken place.