How can the body utilize the amino acids for either anabolic or catabolic reactions ?

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Amino acids are involved in one class of anabolic reaction, a reaction that uses up energy to make large molecules out of small ones. In an amino acid anabolic reaction, amino acids are strung together to create dipeptides that become large proteins.

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Your body uses catabolic reactions for energy and anabolic reactions to store fat. A catabolic reaction, such as digestion, is the breaking down of molecules to produce energy.  An anabolic reaction is the use of the extra molecules to make large molecules, like fat.

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