Means to make a big molecular nutrition has become a smaller molecules of nutrients, until.Diffusion through the cell membrane. Digestion in the body there are 2 ways: 1. mechanical digestion is chewing food by molecular size change is made, the nutrients are smaller. 2. the complex chemical digestion is to change the size of the molecules of nutrients by using enzymes related to molecules.The substance is a chemical change a smaller molecule.
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