Why food has to be digested?

Question

Why food has to be digested?

Answer 1

Your gut is not really inside your body.  It's basically a passageway through.  When you eat something, let's say an apple, your body cells (which is what needs the energy from food) can't absorb an apple.  They can't even absorb the pieces of the apple that you chew up and swallow.  

How your cells (and therefore your body) gets vitamins, minerals, and energy from food is that it is broken down into small molecular constitutents by chemical digestion.  Enzymes break apart the bonds that hold the sugar molecules together.  When these sugars are broken apart to a size small enough that they will be able to be transported across your cell membranes, then we can actually absorb the food into our body cells.  It's in your intesting that this absorption takes place.

Answer 2

because if not ur stomach will blow up from all the food u eat...

Answer 3

Macromolecules such as intact protein molecules can not go through cell membranes and have to be broken down to the monomer components before they can be absorbed into the body.

Answer 4

For human use, they need to boken down to smaller and specific molecules such as smaller protein, fatty acids, vitamins and  minerals so the cells can absorb, transport and process  them.  

Answer 5

you'll explode if you dont..your stomach wouldnt fit it all