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Sulfur is found in the bonds between certain amino acids- which are the chemical building blocks of proteins. The body uses 20 different amino acids in various sequences and lengths to make all of its proteins. The amino acids cysteine and methionine has a S atom in it. Two cysteine residues can therefore join together via their S atoms to form a disulphide bond. This bond makes proteins stronger, e.g keratin in hair and nails. Also proteins and other componds with biochemical importance contain sulfur.

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13y ago
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14y ago

Sulfur is important not only to humans, but also to plants and bacterias.

  • There are two amino acids (cysteine and methionine) that contains sulfur, which therefore means that all proteins and enzymes contain sulfur (since methionine is present in all proteins).
  • Thiamine (vitamin B1) is essential for the peripheral nervous system and contains sulfur.
  • Sulfur forms a part of a basic substance that is involved in oxygen usage.
  • Some bacterias use sulfur as an electron acceptor.
  • Sulfur can serve as a food to some chemoautotrophic organisms.
  • Sulfur is essential for plant growth, root nodule formation and defense mechanism.
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13y ago

Yes, sulfur is found in plants and animals.

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6y ago

Yes. Sulfate is a negatively charged ion consisting of a sulfur atom bonded to four oxygen atoms.

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12y ago

no

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Q: Why is sulfur essential for living things?
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