Stomach - highly acidic environment will denature and/or break down proteins.
amino acids
secretion
Proteins.
Liver & pancreas.
The ribosomes.
The main chemical activity of the stomach is digestion of the proteins. There are a number of enzymes and hormones secreted in the stomach to aid this process.
Catabolic reactions breakdown polymers into monomers. Enzymes in our body essentially aid in that process. Polymers cannot be absorbed into the cells so it has to be broken down into simpler units.
Ancillary Organs are the additional, subsidiary organs that provide aid to the primary organs.
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The act of grinding the food is not chemical change, as the same molacules are present in the same form, but there are many chemical reactions in the mouth (such as the breakdown of long chain carbohydrates), and other processes which aid digestion (mixture with mucus)
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Cool Aid
amino acids
Fatty acids
secretion
No. Proteins are composed of many chains of amino acids. Ribosomes aid in the synthesis of proteins, but aren't actually a part of them.