Secreted at various points along the digestive tract, enzymes break down large molecules of food into smaller molecules ... The first of three sections of the small intestine, the duodenum ...

Once there, the digested food molecules are carried around the body to where they are needed. Only small, soluble substances can pass across the wall of the small intestine. Large insoluble ...

Rather than burning all their energy in one large reaction, cells release the energy stored in their food molecules through a series of oxidation reactions. Oxidation describes a type of chemical ...

They are just small molecules that should not be very complicated to produce on a large scale ... in order to protect our food supply as we strive towards a greener future.

The attractions water molecules have for each other keep them close together. They can move past each other, but their attractions keep them from moving far apart from each other. The blue food ...

Once there, the digested food molecules are carried around the body to where they are needed. Only small, soluble substances can pass across the wall of the small intestine. Large insoluble ...