The crystalline, odourless element (S = sulphur, meaning "slow-burning") with its typical sulphur-yellow colour is essential for all organisms. Like nitrogen, it is a vital nutrient for humans, animals and plants, as both play important roles in biochemical processes. It is an essential component of amino acids and proteins, which are essential for the structure and function of cells. It plays an important role in metabolism, especially in detoxification and antioxidant protection. Sulphur is also contained in vitamins (such as biotin and thiamine) and enzymes, which are necessary for many biochemical processes.
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