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,... More »

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 ... More » Science Biology Molecular Biology & DNA

There are 20 different kinds of amino acids. Adult humans can only produce 11 of them, so the other nine must be consumed via diet. The amino acids that humans cannot produce are called essential amino acids because they... More »

In humans, there are nine essential amino acids. An essential amino acid is one that cannot be manufactured in the body; it must come from the food humans eat. The other 11 amino acids are considered to be nonessential. More »

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. T... More »

The human body can produce ten amino acids. They are alanine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine and tyrosine. Other amino acids have to be consumed in the diet. More »

Methionine is the amino acid that uses the abbreviation "met." The human body uses methionine to produce protein molecules that are then used to build muscle and organ tissues. More » Science Chemistry Organic Chemistry