Proteins are an example of a macronutrient., We need macronutrients in large quantities,, meaning we need proteins in large quantities in our diet., Protein is essential for growth and repair of cells and tissues in the body., Proteins are made up of chains of molecules called amino acids., Protease breaks proteins down into amino acids, and then these amino acids are rearranged to form new proteins needed by the body., Examples of proteins include fish, chicken, lean beef and eggs..

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