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www.reference.com/article/amino-acids-9f49140220ebe234

Amino acids are biologically organic compounds that are merged together to form proteins. Together, these combinations are the building blocks of life. There are about 20 amino acids, eight of which are considered essential and the others non-essential or conditional.

www.reference.com/article/amino-acids-71ca69aa469b57d4

Amino acids are used in the human body to make proteins which help the body grow, repair body tissue and break down food. Amino acids help with muscle control, build muscle tissue and protect the body’s nervous system. They also increase the production of growth hormone...

www.reference.com/article/many-amino-acids-aa6019369bcea23d

According to the ASU School of Life Sciences, 21 amino acids are used by the human body to build all the protein it needs. The exact number of universal amino acids may differ depending on the source, as some give 20 or 22 as alternative answers.

www.reference.com/article/amino-acids-made-3f54b50e76d02c30

Amino acids are small chemical compounds that contain both an amino functional group and a carboxyl functional group. These compounds can be synthesized together to form proteins which the human body uses.

www.reference.com/science/two-functional-groups-always-found-amino-acids-2d6864d120eb59c6

The two functional groups always found in amino acids are carboxyl and amino groups. Both groups are acidic. A peptide bond occurs when the carboxyl group of one amino acid joins the amino end of another.

www.reference.com/article/foods-amino-acids-d196797d8c842652

Animal products, such as meat, dairy and eggs, as well as plant-based foods, such as soybeans, nuts, quinoa and buckwheat, all contain amino acids. Amino acids are the building blocks of protein and are an essential daily nutrient.

www.reference.com/article/many-amino-acids-exist-f0b40032432093e7

There are 20 amino acids that are active in the human body. In addition to these, there are approximately 250 non-protein-forming amino acids. There are three main types of amino acids that the body processes: essential, nonessential and semi-essential.